Update ACE Editor to version 1.2.9

The new ACE editor introduces full support for emojis (and, thereby, UTF-16 characters with high- and low-surrogates). Hence, we can remove our custom fix.

Further, this update will allow emojis to be used in pair programming sessions.

vendor/assets/javascripts/ace/mode-d.js

@@ -25,7 +25,7 @@ DocCommentHighlightRules.getTagRule = function(start) {
         token : "comment.doc.tag.storage.type",
         regex : "\\b(?:TODO|FIXME|XXX|HACK)\\b"
     };
-}
+};
 
 DocCommentHighlightRules.getStartRule = function(start) {
     return {
@@ -130,7 +130,7 @@ var DHighlightRules = function() {
                 next : "star-comment"
             }, {
                 token: "comment.shebang",
-                regex: "^\s*#!.*"
+                regex: "^\\s*#!.*"
             }, {
                 token : "comment",
                 regex : "\\/\\+",
@@ -369,8 +369,8 @@ oop.inherits(FoldMode, BaseFoldMode);
 
 (function() {
     
-    this.foldingStartMarker = /(\{|\[)[^\}\]]*$|^\s*(\/\*)/;
-    this.foldingStopMarker = /^[^\[\{]*(\}|\])|^[\s\*]*(\*\/)/;
+    this.foldingStartMarker = /([\{\[\(])[^\}\]\)]*$|^\s*(\/\*)/;
+    this.foldingStopMarker = /^[^\[\{\(]*([\}\]\)])|^[\s\*]*(\*\/)/;
     this.singleLineBlockCommentRe= /^\s*(\/\*).*\*\/\s*$/;
     this.tripleStarBlockCommentRe = /^\s*(\/\*\*\*).*\*\/\s*$/;
     this.startRegionRe = /^\s*(\/\*|\/\/)#?region\b/;
@@ -499,6 +499,7 @@ var FoldMode = require("./folding/cstyle").FoldMode;
 var Mode = function() {
     this.HighlightRules = DHighlightRules;
     this.foldingRules = new FoldMode();
+    this.$behaviour = this.$defaultBehaviour;
 };
 oop.inherits(Mode, TextMode);