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diff --git a/web/static/js/jquery-dragster/jquery.dragster.js b/web/static/js/jquery-dragster/jquery.dragster.js
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+++ b/web/static/js/jquery-dragster/jquery.dragster.js
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+// 1.0.3
+/*
+The MIT License (MIT)
+
+Copyright (c) 2015 Jan Martin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+(function ($) {
+
+    $.fn.dragster = function (options) {
+        var settings = $.extend({
+            enter: $.noop,
+            leave: $.noop,
+            over: $.noop,
+            drop: $.noop
+        }, options);
+
+        return this.each(function () {
+            var first = false,
+                second = false,
+                $this = $(this);
+
+            $this.on({
+                dragenter: function (event) {
+                    if (first) {
+                        second = true;
+                        return;
+                    } else {
+                        first = true;
+                        $this.trigger('dragster:enter', event);
+                    }
+                    event.preventDefault();
+                },
+                dragleave: function (event) {
+                    if (second) {
+                        second = false;
+                    } else if (first) {
+                        first = false;
+                    }
+                    if (!first && !second) {
+                        $this.trigger('dragster:leave', event);
+                    }
+                    event.preventDefault();
+                },
+                dragover: function (event) {
+                    $this.trigger('dragster:over', event);
+                    event.preventDefault();
+                },
+                drop: function (event) {
+                    if (second) {
+                        second = false;
+                    } else if (first) {
+                        first = false;
+                    }
+                    if (!first && !second) {
+                        $this.trigger('dragster:drop', event);
+                    }
+                    event.preventDefault();
+                },
+                'dragster:enter': settings.enter,
+                'dragster:leave': settings.leave,
+                'dragster:over': settings.over,
+                'dragster:drop': settings.drop
+            });
+        });
+    };
+
+}(jQuery));