DOC-3329: Revert content-css partial and add licencekeymanager to external-plugin-npm file.

Author: kemister85

modules/ROOT/pages/bundling-content-css.adoc

@@ -65,14 +65,6 @@ const contentCSS = require('../tinymce/skins/content/example/content.css');
 ----
 |===
 
-[IMPORTANT]
-====
-The handling of content CSS files varies between bundling tools:
-
-* **Webpack/Rollup**: Import the `.css` file as a variable and use `+content_style+` option (e.g., `+content_style: contentCSS.toString()+`).
-* **Vite**: Import the `.js` file as a side-effect and use `+content_css+` option with a string value (e.g., `+content_css: 'example'+`).
-
-View the relevant guide for the required syntax at xref:introduction-to-bundling-tinymce.adoc[Bundling {productname} with a module loader].
-====
+IMPORTANT: The handling of content CSS files (such as `+content.css+` or `+content.min.css+`) varies between bundling tools. View the relevant guide for the required syntax at xref:introduction-to-bundling-tinymce.adoc[Bundling {productname} with a module loader].
 
 include::partial$module-loading/bundling-content-css-files.adoc[]

modules/ROOT/partials/module-loading/bundling-external-plugins-npm.adoc

@@ -1,9 +1,9 @@
-    /* Optional: Configure external_plugins for lazy loading premium plugins
-     * Remove the import or require statement for any premium plugin you want to lazy load,
-     * then uncomment and configure external_plugins below:
+    /* Alternatively to importing premium plugins directly, you can configure external_plugins to load premium plugins in a different location.
+     * Remember to include the licensekeymanager plugin when using premium plugins.
     */
     // external_plugins: {
-    //   'advcode': '/node_modules/tinymce-premium/plugins/advcode/plugin.min.js',
-    //   'tinycomments': '/node_modules/tinymce-premium/plugins/tinycomments/plugin.min.js'
+    //   'advcode': '<path_to_premium_plugins>/advcode/plugin.min.js',
+    //   'tinycomments': '<path_to_premium_plugins>/tinycomments/plugin.min.js'
+    //   'licensekeymanager': '<path_to_premium_plugins>/licensekeymanager/plugin.min.js',
     // },