Update UI file to add a warning
Upgrade COPS to 0.9.0

0.9.0 - 20131231
  * Add a lot of unit testing. I hope it will limit the risks of regression.
  * Added a "smart / autocomplete" search.
  * Updated the way locales are handled. Should be easier to add new languages.
  * Fixed display of Cyrillic characters.
  * Upgraded doT to version 1.0.1, Magnific-Popup to 0.9.8, Normalize.css to 2.1.3, Jquery-cookie to 1.4.0.
  * Fixed OPDS stream validity. Reported by Didier.
  * Added a new check in checkconfig.php to detect case problem between the actual path and the path stored in Calibre database. Try checkconfig.php?full=1. Reported by Ruud.
  * Fixed the display of the rating stars with Chrome. Thanks to At_Libitum.
  * Added a new parameter ($config['cops_titles_split_first_letter']) to avoid splitting the books by first letter. Thanks to At_Libitum.
  * Fixed non compliant OPDS search (for Stanza, Moon+ Reader, ...). Reported by At_Libitum.
  * Fixed the redirection in case the Calibre database is not found. Reported by At_Libitum
  * Changed .htaccess to allow the use of password protected catalogs with Sony's eReader (PRS-TX). Thanks to Ruud for the beta testing.
  * Updated Chinese, German, Norwegian, Portuguese, Russian translations. Huge thanks to all the translators.
  * Fixed a small problem : If a book had no summary the cover could be cut.
  * Fix COPS on Internet Explorer 9. Reported by At_Libitum.
  * Added publishers in home categories / search / autocomplete search.
  * Added a new configuration item ($config ['cops_ignored_categories']) to ignore some categories (author, tag, publisher, ...) in home screen and searches. It's also available in the "Customize UI" page.
  * Updated .htaccess to allow downloading books with a password protected COPS on a Sony PRS-TX. Reported by Ruud.
  * Changed the default search to search by categories also (should help with OPDS). Thanks to At_Libitum.
  * Fixed the tag filtering in the HTML catalog when two tags starts by the same word. Reported by Tyler.