fix: replace stale ep_aa_file_menu_toolbar references with package name

After commits cc3314d/bdefdd2 renamed the package from
ep_aa_file_menu_toolbar to ep_file_menu_toolbar, the eejs.require()
calls in eejs.js and the $.getScript URL in static/js/index.js still
pointed at the old name. Etherpad serves /static/plugins/<package>/...
and resolves eejs.require('<package>/...') against the package's real
path, both keyed by package.json name, so any user-visible click that
triggered eejsBlock_body / eejsBlock_styles or loaded the toolbar
script would 404 / fail to render.

Also drop the README's instruction to clone into ep_aa_file_menu_toolbar
- the modern plugin loader installs by package.json name, the aa_
prefix hack only mattered for legacy directory-name ordering.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: JohnMcLear

README.md

@@ -7,7 +7,7 @@
 ## Installation
 Install using /admin/plugins 
 OR
-``git clone git@github.com:JohnMcLear/ep_file_menu_toolbar.git ep_aa_file_menu_toolbar``
+``git clone git@github.com:ether/ep_file_menu_toolbar.git``
 
 ## TODO
 * i18n support

eejs.js

@@ -4,7 +4,7 @@ const eejs = require('ep_etherpad-lite/node/eejs/');
 
 exports.eejsBlock_styles = (hookName, args, cb) => {
   const css = eejs.require(
-      'ep_aa_file_menu_toolbar/static/js/lib/jquery-css-dropdown-plugin-master/dropdown-menu.css',
+      'ep_file_menu_toolbar/static/js/lib/jquery-css-dropdown-plugin-master/dropdown-menu.css',
       {}, module,
   );
   args.content = `${args.content}
@@ -13,7 +13,7 @@ exports.eejsBlock_styles = (hookName, args, cb) => {
 };
 
 exports.eejsBlock_body = (hookName, args, cb) => {
-  args.content = eejs.require('ep_aa_file_menu_toolbar/templates/toolbar.ejs', {
+  args.content = eejs.require('ep_file_menu_toolbar/templates/toolbar.ejs', {
     settings: false,
   }) + args.content;
   cb();

static/js/index.js

@@ -2,7 +2,7 @@
 
 exports.documentReady = () => {
   /* eslint-disable-next-line max-len */
-  $.getScript('../static/plugins/ep_aa_file_menu_toolbar/static/js/lib/jquery-css-dropdown-plugin-master/dropdown-menu.js', () => {
+  $.getScript('../static/plugins/ep_file_menu_toolbar/static/js/lib/jquery-css-dropdown-plugin-master/dropdown-menu.js', () => {
     $(() => {
       $('.dropdown-menu').dropdown_menu({
         open_delay: 50, // Delay on menu open