fixed string replace issue that caused problems, this removes build cache…

fixed string replace issue that caused problems, this removes build cache busting in requirejs, will need to fix that later

src/app/app.js

@@ -26,7 +26,7 @@ function (angular, $, _, appLevelRequire) {
     // features if we define them after boot time
     register_fns = {};
 
-  // // This stores the Kibana revision number, @REV@ is replaced by grunt.
+  // This stores the grafana version number
   app.constant('grafanaVersion',"@grafanaVersion@");
 
   // Use this for cache busting partials

tasks/build_task.js

@@ -26,15 +26,11 @@ module.exports = function(grunt) {
         options: {
           replacements: [
             {
-              pattern: /(?:^|\/\/)(.*)@REV@/,
-              replacement: '$1'+desc.object
-            },
-            {
-              pattern: /@REV@/,
+              pattern: /@REV@/g,
               replacement: desc.object
             },
             {
-              pattern: /@grafanaVersion@/,
+              pattern: /@grafanaVersion@/g,
               replacement: 'v<%= pkg.version %>'
             }
           ]