Add missing $id to those Modes that are missing it.

I've found that the set of modes in this PR did not set their `$id`.
The side-effect of that is that when one of these modes is the current
mode of an EditSession, and one calls `session.getOption('mode')` the
returned value was incorrect.  It goes up the prototype chain so you'd
get something like 'ace/mode/text' or 'ace/mode/html' in most cases.

This fixes that so that if, for example, the mode is set to
'ace/mode/django', the value returned by the option will be
'ace/mode/django'

lib/ace/mode/apache_conf.js

@@ -55,6 +55,7 @@ oop.inherits(Mode, TextMode);
 
 (function() {
     this.lineCommentStart = "#";
+    this.$id = "ace/mode/apache_conf";
     // Extra logic goes here.
 }).call(Mode.prototype);
 

lib/ace/mode/django.js

@@ -112,5 +112,9 @@ var Mode = function() {
 };
 oop.inherits(Mode, HtmlMode);
 
+(function() {
+    this.$id = "ace/mode/django";
+}).call(Mode.prototype);
+
 exports.Mode = Mode;
 });

lib/ace/mode/glsl.js

@@ -49,5 +49,9 @@ var Mode = function() {
 };
 oop.inherits(Mode, CMode);
 
+(function() {
+    this.$id = "ace/mode/glsl";
+}).call(Mode.prototype);
+
 exports.Mode = Mode;
 });

lib/ace/mode/livescript.js

@@ -9,6 +9,7 @@ define(function(require, exports, module){
       if (that = require('../mode/matching_brace_outdent')) {
         this.$outdent = new that.MatchingBraceOutdent;
       }
+      this.$id = "ace/mode/livescript";
     }
     indenter = RegExp('(?:[({[=:]|[-~]>|\\b(?:e(?:lse|xport)|d(?:o|efault)|t(?:ry|hen)|finally|import(?:\\s*all)?|const|var|let|new|catch(?:\\s*' + identifier + ')?))\\s*$');
     prototype.getNextLineIndent = function(state, line, tab){

lib/ace/mode/luapage.js

@@ -17,5 +17,9 @@ var Mode = function() {
 };
 oop.inherits(Mode, HtmlMode);
 
+(function() {
+    this.$id = "ace/mode/luapage";
+}).call(Mode.prototype);
+
 exports.Mode = Mode;
 });

lib/ace/mode/lucene.js

@@ -12,5 +12,9 @@ var Mode = function() {
 
 oop.inherits(Mode, TextMode);
 
+(function() {
+    this.$id = "ace/mode/lucene";
+}).call(Mode.prototype);
+
 exports.Mode = Mode;
 });

lib/ace/mode/mel.js

@@ -49,7 +49,7 @@ oop.inherits(Mode, TextMode);
 
     this.lineCommentStart = "//";
     this.blockComment = {start: "/*", end: "*/"};
-
+    this.$id = "ace/mode/mel";
 }).call(Mode.prototype);
 
 exports.Mode = Mode;

lib/ace/mode/properties.js

@@ -41,5 +41,9 @@ var Mode = function() {
 };
 oop.inherits(Mode, TextMode);
 
+(function() {
+    this.$id = "ace/mode/properties";
+}).call(Mode.prototype);
+
 exports.Mode = Mode;
 });