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/snippets/drools.js

@@ -0,0 +1,26 @@
+define("ace/snippets/drools",["require","exports","module"], function(require, exports, module) {
+"use strict";
+
+exports.snippetText = "\n\
+snippet rule\n\
+	rule \"${1?:rule_name}\"\n\
+	when\n\
+		${2:// when...} \n\
+	then\n\
+		${3:// then...}\n\
+	end\n\
+\n\
+snippet query\n\
+	query ${1?:query_name}\n\
+		${2:// find} \n\
+	end\n\
+	\n\
+snippet declare\n\
+	declare ${1?:type_name}\n\
+		${2:// attributes} \n\
+	end\n\
+\n\
+";
+exports.scope = "drools";
+
+});