update to 4.8.2 remove temp patch

Author: dgrammatiko

build/media_src/editors/tinymce/js/tinymce.es6.js

@@ -91,15 +91,6 @@
         });
       };
 
-      // @todo remove next 2 lines once the issue
-      // https://github.com/tinymce/tinymce/issues/4502
-      // is fixed
-
-      if (typeof window.InstallTrigger !== 'undefined') {
-        delete options.external_plugins;
-        delete options.plugins;
-      }
-
       // Create a new instance
       // eslint-disable-next-line no-undef
       const ed = new tinyMCE.Editor(element.id, options, tinymce.EditorManager);

package-lock.json

@@ -39,7 +39,7 @@
     "mediaelement": "4.2.8",
     "popper.js": "^1.14.3",
     "punycode": "1.4.1",
-    "tinymce": "4.7.7"
+    "tinymce": "4.8.2"
   },
   "devDependencies": {
     "autoprefixer": "^8.0.0",