MDL-51921 files: Fixes for file manager issues

Fixed the issue where the file path select box goes beyond the
container with very long folder names. Instead of setting to
"width: auto", I set it the select box's "width: 100%" so that it will
just fill up its container's width.
Fixed the issue where markups are being shown on file aliases.

lib/form/filemanager.js

@@ -960,8 +960,12 @@ M.form_filemanager.init = function(Y, options) {
             for (var i in attrs) {
                 if (selectnode.one('.fp-'+attrs[i])) {
                     var value = (node[attrs[i]+'_f']) ? node[attrs[i]+'_f'] : (node[attrs[i]] ? node[attrs[i]] : '');
+                    // Escape if the attribute being evaluated is not for the list of reference files.
+                    if (attrs[i] !== 'reflist') {
+                        value = Y.Escape.html(value);
+                    }
                     selectnode.one('.fp-'+attrs[i]).addClassIf('fp-unknown', ''+value == '')
-                        .one('.fp-value').setContent(Y.Escape.html(value));
+                        .one('.fp-value').setContent(value);
                 }
             }
             // display thumbnail

theme/bootstrapbase/less/moodle/filemanager.less

@@ -1251,6 +1251,9 @@ a.ygtvspacer:hover {
         }
         .controls {
             margin-left: 125px;
+            select {
+                width: 100%;
+            }
         }
         .controls.control-radio input {
                 margin-top: 3px;