This reverts commit 20aac81e95a7b94725149084ffe7fccdfb422510, reversing
changes made to 985bf78e470ab38d40300996036b3fbd8d2a9b3d.
Conflicts:
plugins/bookmarks-by-zaso.user.js
- the plugin work on mobile (the open/close folders script is disabled);
- add a category plugin: "Controls";
- fixed on firefox accidental click event on the bookmark's link when
the bookmark is dragged
- edit z-index of the ribbon: now it's shown below the chat;
it has non-standard dialog opening, non-standard activation methods, and the dialog background isn't working
(this could be due to me breaking things when splitting it up into separate image/css/js files - it was submitted as a single file)
