[done] Add Vocaroo embedding support [done] Use Babel [done] Use LESS [done] Use Gulp [done] Refactor: use ES-2015 features [done] Embed search results into page (no separate search page) [done] Limit WebSocket request count per period of time [done] Implement limiting access by country [done] Implement plugin support [done] Improve time correction [done] Improve hotkeys (add ability to disable a singel hotkey; fix Ctrl+Right, etc.) [done] Do not show update and auto update buttons in archived threads [done] Serve local copies of YouTube, Coub and Vocaroo favicons [done] Use GraphicsMagick instead of ImageMagick [done] Use SQL storage for archived threads/posts/files * Optimize HTML structure * Use WebSockets for trakcing favorite threads * Add ability to reply to post previews (use floating post form) * Improve posting speed statistics * Add thread statistics * Remove "NO_ACCESS" ban level (retain "READ_ONLY") * Implement subnet support * Improve DB structure * Incapsulate actions (reduce coherence) * Fix post previews * Remove some boards and add them to the Wiki as an example of custom boards * Validate post form before submitting * Auto save post form