/*!
 * Nestable jQuery Plugin - Copyright (c) 2012 David Bushell - http://dbushell.com/
 * Dual-licensed under the BSD or MIT licenses
 */
; (function ($, window, document, undefined) {
  var hasTouch = 'ontouchstart' in document;

  /**
   * Detect CSS pointer-events property
   * events are normally disabled on the dragging element to avoid conflicts
   * https://github.com/ausi/Feature-detection-technique-for-pointer-events/blob/master/modernizr-pointerevents.js
   */
  var hasPointerEvents = (function () {
    var el = document.createElement('div'),
      docEl = document.documentElement;
    if (!('pointerEvents' in el.style)) {
      return false;
    }
    el.style.pointerEvents = 'auto';
    el.style.pointerEvents = 'x';
    docEl.appendChild(el);
    var supports = window.getComputedStyle && window.getComputedStyle(el, '').pointerEvents === 'auto';
    docEl.removeChild(el);
    return !!supports;
  })();

  var defaults = {
    listNodeName: 'ol',
    itemNodeName: 'li',
    rootClass: 'dd',
    listClass: 'dd-list',
    itemClass: 'dd-item',
    dragClass: 'dd-dragel',
    handleClass: 'dd-handle',
    collapsedClass: 'dd-collapsed',
    placeClass: 'dd-placeholder',
    noDragClass: 'dd-nodrag',
    emptyClass: 'dd-empty',
    expandBtnHTML: '<button data-action="expand" type="button">Expand</button>',
    collapseBtnHTML: '<button data-action="collapse" type="button">Collapse</button>',
    group: 0,
    maxDepth: 5,
    threshold: 20
  };

  function Plugin(element, options) {
    this.w = $(document);
    this.el = $(element);
    this.options = $.extend({}, defaults, options);
    this.init();
  }

  Plugin.prototype = {

    init: function () {
      var list = this;

      list.reset();

      list.el.data('nestable-group', this.options.group);

      list.placeEl = $('<div class="' + list.options.placeClass + '"/>');

      $.each(this.el.find(list.options.itemNodeName), function (k, el) {
        list.setParent($(el));
      });

      list.el.on('click', 'button', function (e) {
        if (list.dragEl) {
          return;
        }
        var target = $(e.currentTarget),
          action = target.data('action'),
          item = target.parent(list.options.itemNodeName);
        if (action === 'collapse') {
          list.collapseItem(item);
        }
        if (action === 'expand') {
          list.expandItem(item);
        }
      });

      var onStartEvent = function (e) {
        var handle = $(e.target);
        if (!handle.hasClass(list.options.handleClass)) {
          if (handle.closest('.' + list.options.noDragClass).length) {
            return;
          }
          handle = handle.closest('.' + list.options.handleClass);
        }

        if (!handle.length || list.dragEl) {
          return;
        }

        list.isTouch = /^touch/.test(e.type);
        if (list.isTouch && e.touches.length !== 1) {
          return;
        }

        e.preventDefault();
        list.dragStart(e.touches ? e.touches[0] : e);
      };

      var onMoveEvent = function (e) {
        if (list.dragEl) {
          e.preventDefault();
          list.dragMove(e.touches ? e.touches[0] : e);
        }
      };

      var onEndEvent = function (e) {
        if (list.dragEl) {
          e.preventDefault();
          list.dragStop(e.touches ? e.touches[0] : e);
        }
      };

      if (hasTouch) {
        list.el[0].addEventListener('touchstart', onStartEvent, false);
        window.addEventListener('touchmove', onMoveEvent, false);
        window.addEventListener('touchend', onEndEvent, false);
        window.addEventListener('touchcancel', onEndEvent, false);
      }

      list.el.on('mousedown', onStartEvent);
      list.w.on('mousemove', onMoveEvent);
      list.w.on('mouseup', onEndEvent);

    },

    serialize: function () {
      var data,
        depth = 0,
        list = this;
      step = function (level, depth) {
        var array = [],
          items = level.children(list.options.itemNodeName);
        items.each(function () {
          var li = $(this),
            item = $.extend({}, li.data()),
            sub = li.children(list.options.listNodeName);
          if (sub.length) {
            item.children = step(sub, depth + 1);
          }
          array.push(item);
        });
        return array;
      };
      data = step(list.el.find(list.options.listNodeName).first(), depth);
      return data;
    },

    serialise: function () {
      return this.serialize();
    },

    reset: function () {
      this.mouse = {
        offsetX: 0,
        offsetY: 0,
        startX: 0,
        startY: 0,
        lastX: 0,
        lastY: 0,
        nowX: 0,
        nowY: 0,
        distX: 0,
        distY: 0,
        dirAx: 0,
        dirX: 0,
        dirY: 0,
        lastDirX: 0,
        lastDirY: 0,
        distAxX: 0,
        distAxY: 0
      };
      this.isTouch = false;
      this.moving = false;
      this.dragEl = null;
      this.dragRootEl = null;
      this.dragDepth = 0;
      this.hasNewRoot = false;
      this.pointEl = null;
    },

    expandItem: function (li) {
      li.removeClass(this.options.collapsedClass);
      li.children('[data-action="expand"]').hide();
      li.children('[data-action="collapse"]').show();
      li.children(this.options.listNodeName).show();
    },

    collapseItem: function (li) {
      var lists = li.children(this.options.listNodeName);
      if (lists.length) {
        li.addClass(this.options.collapsedClass);
        li.children('[data-action="collapse"]').hide();
        li.children('[data-action="expand"]').show();
        li.children(this.options.listNodeName).hide();
      }
    },

    expandAll: function () {
      var list = this;
      list.el.find(list.options.itemNodeName).each(function () {
        list.expandItem($(this));
      });
    },

    collapseAll: function () {
      var list = this;
      list.el.find(list.options.itemNodeName).each(function () {
        list.collapseItem($(this));
      });
    },

    setParent: function (li) {
      if (li.children(this.options.listNodeName).length) {
        li.prepend($(this.options.expandBtnHTML));
        li.prepend($(this.options.collapseBtnHTML));
      }
      li.children('[data-action="expand"]').hide();
    },

    unsetParent: function (li) {
      li.removeClass(this.options.collapsedClass);
      li.children('[data-action]').remove();
      li.children(this.options.listNodeName).remove();
    },

    dragStart: function (e) {
      var mouse = this.mouse,
        target = $(e.target),
        dragItem = target.closest(this.options.itemNodeName);

      this.placeEl.css('height', dragItem.height());

      mouse.offsetX = e.offsetX !== undefined ? e.offsetX : e.pageX - target.offset().left;
      mouse.offsetY = e.offsetY !== undefined ? e.offsetY : e.pageY - target.offset().top;
      mouse.startX = mouse.lastX = e.pageX;
      mouse.startY = mouse.lastY = e.pageY;

      this.dragRootEl = this.el;

      this.dragEl = $(document.createElement(this.options.listNodeName)).addClass(this.options.listClass + ' ' + this.options.dragClass);
      this.dragEl.css('width', dragItem.width());

      dragItem.after(this.placeEl);
      dragItem[0].parentNode.removeChild(dragItem[0]);
      dragItem.appendTo(this.dragEl);

      $(document.body).append(this.dragEl);
      this.dragEl.css({
        'left': e.pageX - mouse.offsetX,
        'top': e.pageY - mouse.offsetY
      });
      // total depth of dragging item
      var i, depth,
        items = this.dragEl.find(this.options.itemNodeName);
      for (i = 0; i < items.length; i++) {
        depth = $(items[i]).parents(this.options.listNodeName).length;
        if (depth > this.dragDepth) {
          this.dragDepth = depth;
        }
      }
    },

    dragStop: function (e) {
      var el = this.dragEl.children(this.options.itemNodeName).first();
      el[0].parentNode.removeChild(el[0]);
      this.placeEl.replaceWith(el);

      this.dragEl.remove();
      this.el.trigger('change');
      if (this.hasNewRoot) {
        this.dragRootEl.trigger('change');
      }
      this.reset();
    },

    dragMove: function (e) {
      var list, parent, prev, next, depth,
        opt = this.options,
        mouse = this.mouse;

      this.dragEl.css({
        'left': e.pageX - mouse.offsetX,
        'top': e.pageY - mouse.offsetY
      });

      // mouse position last events
      mouse.lastX = mouse.nowX;
      mouse.lastY = mouse.nowY;
      // mouse position this events
      mouse.nowX = e.pageX;
      mouse.nowY = e.pageY;
      // distance mouse moved between events
      mouse.distX = mouse.nowX - mouse.lastX;
      mouse.distY = mouse.nowY - mouse.lastY;
      // direction mouse was moving
      mouse.lastDirX = mouse.dirX;
      mouse.lastDirY = mouse.dirY;
      // direction mouse is now moving (on both axis)
      mouse.dirX = mouse.distX === 0 ? 0 : mouse.distX > 0 ? 1 : -1;
      mouse.dirY = mouse.distY === 0 ? 0 : mouse.distY > 0 ? 1 : -1;
      // axis mouse is now moving on
      var newAx = Math.abs(mouse.distX) > Math.abs(mouse.distY) ? 1 : 0;

      // do nothing on first move
      if (!mouse.moving) {
        mouse.dirAx = newAx;
        mouse.moving = true;
        return;
      }

      // calc distance moved on this axis (and direction)
      if (mouse.dirAx !== newAx) {
        mouse.distAxX = 0;
        mouse.distAxY = 0;
      } else {
        mouse.distAxX += Math.abs(mouse.distX);
        if (mouse.dirX !== 0 && mouse.dirX !== mouse.lastDirX) {
          mouse.distAxX = 0;
        }
        mouse.distAxY += Math.abs(mouse.distY);
        if (mouse.dirY !== 0 && mouse.dirY !== mouse.lastDirY) {
          mouse.distAxY = 0;
        }
      }
      mouse.dirAx = newAx;

      /**
       * move horizontal
       */
      if (mouse.dirAx && mouse.distAxX >= opt.threshold) {
        // reset move distance on x-axis for new phase
        mouse.distAxX = 0;
        prev = this.placeEl.prev(opt.itemNodeName);
        // increase horizontal level if previous sibling exists and is not collapsed
        if (mouse.distX > 0 && prev.length && !prev.hasClass(opt.collapsedClass)) {
          // cannot increase level when item above is collapsed
          list = prev.find(opt.listNodeName).last();
          // check if depth limit has reached
          depth = this.placeEl.parents(opt.listNodeName).length;
          if (depth + this.dragDepth <= opt.maxDepth) {
            // create new sub-level if one doesn't exist
            if (!list.length) {
              list = $('<' + opt.listNodeName + '/>').addClass(opt.listClass);
              list.append(this.placeEl);
              prev.append(list);
              this.setParent(prev);
            } else {
              // else append to next level up
              list = prev.children(opt.listNodeName).last();
              list.append(this.placeEl);
            }
          }
        }
        // decrease horizontal level
        if (mouse.distX < 0) {
          // we can't decrease a level if an item preceeds the current one
          next = this.placeEl.next(opt.itemNodeName);
          if (!next.length) {
            parent = this.placeEl.parent();
            this.placeEl.closest(opt.itemNodeName).after(this.placeEl);
            if (!parent.children().length) {
              this.unsetParent(parent.parent());
            }
          }
        }
      }

      var isEmpty = false;

      // find list item under cursor
      if (!hasPointerEvents) {
        this.dragEl[0].style.visibility = 'hidden';
      }
      this.pointEl = $(document.elementFromPoint(e.pageX - document.body.scrollLeft, e.pageY - (window.pageYOffset || document.documentElement.scrollTop)));
      if (!hasPointerEvents) {
        this.dragEl[0].style.visibility = 'visible';
      }
      if (this.pointEl.hasClass(opt.handleClass)) {
        this.pointEl = this.pointEl.parent(opt.itemNodeName);
      }
      if (this.pointEl.hasClass(opt.emptyClass)) {
        isEmpty = true;
      }
      else if (!this.pointEl.length || !this.pointEl.hasClass(opt.itemClass)) {
        return;
      }

      // find parent list of item under cursor
      var pointElRoot = this.pointEl.closest('.' + opt.rootClass),
        isNewRoot = this.dragRootEl.data('nestable-id') !== pointElRoot.data('nestable-id');

      /**
       * move vertical
       */
      if (!mouse.dirAx || isNewRoot || isEmpty) {
        // check if groups match if dragging over new root
        if (isNewRoot && opt.group !== pointElRoot.data('nestable-group')) {
          return;
        }
        // check depth limit
        depth = this.dragDepth - 1 + this.pointEl.parents(opt.listNodeName).length;
        if (depth > opt.maxDepth) {
          return;
        }
        var before = e.pageY < (this.pointEl.offset().top + this.pointEl.height() / 2);
        parent = this.placeEl.parent();
        // if empty create new list to replace empty placeholder
        if (isEmpty) {
          list = $(document.createElement(opt.listNodeName)).addClass(opt.listClass);
          list.append(this.placeEl);
          this.pointEl.replaceWith(list);
        }
        else if (before) {
          this.pointEl.before(this.placeEl);
        }
        else {
          this.pointEl.after(this.placeEl);
        }
        if (!parent.children().length) {
          this.unsetParent(parent.parent());
        }
        if (!this.dragRootEl.find(opt.itemNodeName).length) {
          this.dragRootEl.append('<div class="' + opt.emptyClass + '"/>');
        }
        // parent root list has changed
        if (isNewRoot) {
          this.dragRootEl = pointElRoot;
          this.hasNewRoot = this.el[0] !== this.dragRootEl[0];
        }
      }
    }

  };

  $.fn.nestable = function (params) {
    var lists = this,
      retval = this;

    lists.each(function () {
      var plugin = $(this).data("nestable");

      if (!plugin) {
        $(this).data("nestable", new Plugin(this, params));
        $(this).data("nestable-id", new Date().getTime());
      } else {
        if (typeof params === 'string' && typeof plugin[params] === 'function') {
          retval = plugin[params]();
        }
      }
    });

    return retval || lists;
  };

})(window.jQuery || window.Zepto, window, document);

• [F] accordion.min.js
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• [F] admin-global.js
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• [F] custom.js
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• [F] jquery.nestable.js
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• [F] jquery.nice-select.min.js
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• [F] mixitup-multifilter.js
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• [F] mixitup.min.js
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• [F] modernizr-3.11.2.min.js
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• [F] nestable-script.js
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• [F] one_page.js
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• [F] review.js
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• [F] Sortable.min.js
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• [F] sweetalert.min.js
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• [F] tabby.polyfills.min.js
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