refactor: move emmet command registration to desired files. Remove 'AllPreferences' file

Author: devvaannsh

src/command/Commands.js

@@ -215,6 +215,8 @@ define(function (require, exports, module) {
     /** Toggles code beautification on save */
     exports.EDIT_BEAUTIFY_CODE_ON_SAVE  = "edit.beautifyOnSave";         // CodeHintManager.js           _startNewSession()
 
+    exports.EDIT_EMMET                 = "edit.emmet";                 // HTMLCodeHints CSSCodeHints
+
     /** Opens find dialog */
     exports.CMD_FIND                    = "cmd.find";                   // FindReplace.js               _launchFind()
 

src/command/DefaultMenus.js

@@ -185,6 +185,8 @@ define(function (require, exports, module) {
         menu.addMenuItem(Commands.SHOW_CODE_HINTS);
         menu.addMenuDivider();
         menu.addMenuItem(Commands.TOGGLE_CLOSE_BRACKETS);
+        menu.addMenuItem(Commands.EDIT_EMMET);
+
 
         /*
          * Find menu