Merge pull request #12585 from grafana/davkal/fix-plugin-css-loader-2

Fix freezing browser when loading plugin

public/app/features/plugins/plugin_loader.ts

@@ -56,7 +56,7 @@ System.config({
     css: 'vendor/plugin-css/css.js',
   },
   meta: {
-    '*': {
+    '/*': {
       esModule: true,
       authorization: true,
       loader: 'plugin-loader',