[desktop] added option to hide themes selector

apps/common/main/lib/controller/Desktop.js

@@ -86,6 +86,9 @@ define([
                             $('.asc-window.modal').css('top', obj.skiptoparea);
 
                         Common.Utils.InternalSettings.set('window-inactive-area-top', obj.skiptoparea);
+                    } else
+                    if ( obj.lockthemes != undefined ) {
+                        Common.UI.Themes.setAvailable(!obj.lockthemes);
                     }
                 } else
                 if (/editor:config/.test(cmd)) {

apps/common/main/lib/controller/Themes.js

@@ -226,7 +226,11 @@ define([
             },
 
             available: function () {
-                return !Common.Utils.isIE;
+                return !Common.Utils.isIE && !!this.locked;
+            },
+
+            setAvailable: function (value) {
+                this.locked = value;
             },
 
             map: function () {