Upgrade COPS to 1.0.0RC2

 * Updated Italian, Spanish, Portuguese, Norwegian translations.
 * Added Polish translation. Thanks to macak_pl.
 * Added Haitian Creole translation. Thanks to Ian Macdonald & Jacinta.
 * Added Basque translation. Thanks to Turutarena.
 * Upgraded to JQuery 1.11.0, Magnific Popup 0.9.9, Normalize 3.0.1, Typeahead 0.10.2
 * Fixed search with accentuated characters on Internet Explorer.
 * Author can now be searched by sort or by name (Carroll, Lewis or Lewis Carroll will work).
 * Added a new bootstrap user interface.
 * Added correct mimetype for *.ibooks. Reported by Flowney.
 * Added an empty line at the end of .htaccess to make it easier to modify. Reported by Mariosipad.
 * Modified the README and checkconfig.php to check for php5-json. Reported by Mariosipad.
 * Handled properly the cancelling of a mail. Reported by coach0742.
 * Added an ugly hack to try to fix bad rendering with Kindle. Please report if it's better or not.

I also removed the beta flag, it seems to work good enough for DSM5 users.

Thanks in advance