Removed some unused JS deps

We dont use them anywhere, so why have them around?

app/assets/javascripts/application.js

@@ -9,7 +9,6 @@
 window.$ = window.jQuery = require('jquery');
 require('jquery-ujs');
 require('vendor/jquery.endless-scroll');
-require('vendor/jquery.highlight');
 require('vendor/jquery.waitforimages');
 require('vendor/jquery.caret');
 require('vendor/jquery.atwho');
@@ -18,15 +17,12 @@ window.Cookies = require('js-cookie');
 require('./autosave');
 require('bootstrap/js/affix');
 require('bootstrap/js/alert');
-require('bootstrap/js/button');
-require('bootstrap/js/collapse');
 require('bootstrap/js/dropdown');
 require('bootstrap/js/modal');
 require('bootstrap/js/scrollspy');
 require('bootstrap/js/tab');
 require('bootstrap/js/transition');
 require('bootstrap/js/tooltip');
-require('bootstrap/js/popover');
 require('select2/select2.js');
 window.Pikaday = require('pikaday');
 window._ = require('underscore');

vendor/assets/javascripts/jquery.highlight.js

-/*
-
-highlight v3
-
-Highlights arbitrary terms.
-
-<http://johannburkard.de/blog/programming/javascript/highlight-javascript-text-higlighting-jquery-plugin.html>
-
-MIT license.
-
-Johann Burkard
-<http://johannburkard.de>
-<mailto:jb@eaio.com>
-
-*/
-
-jQuery.fn.highlight = function(pat) {
- function innerHighlight(node, pat) {
-  var skip = 0;
-  if (node.nodeType == 3) {
-   var pos = node.data.toUpperCase().indexOf(pat);
-   if (pos >= 0) {
-    var spannode = document.createElement('span');
-    spannode.className = 'highlight_word';
-    var middlebit = node.splitText(pos);
-    var endbit = middlebit.splitText(pat.length);
-    var middleclone = middlebit.cloneNode(true);
-    spannode.appendChild(middleclone);
-    middlebit.parentNode.replaceChild(spannode, middlebit);
-    skip = 1;
-   }
-  }
-  else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
-   for (var i = 0; i < node.childNodes.length; ++i) {
-    i += innerHighlight(node.childNodes[i], pat);
-   }
-  }
-  return skip;
- }
- return this.each(function() {
-  innerHighlight(this, pat.toUpperCase());
- });
-};
-
-jQuery.fn.removeHighlight = function() {
- return this.find("span.highlight").each(function() {
-  this.parentNode.firstChild.nodeName;
-  with (this.parentNode) {
-   replaceChild(this.firstChild, this);
-   normalize();
-  }
- }).end();
-};