* detatch from User and Util and move to its own enum class
* added definitions for all locales the 12340 client could in theory have
* this is incompatble with the Intl extension
* version bump and php requirement bump
* access class property in screenshot/comment-admin by function. Aowow is compatible with PHP 5.5 again
* changed line-endings across the board from \r\n to \n
* separated into appropriate subclasses
* unified sanitizing of $_GET and $_POST data using build in filter_input()
* index now always tries to resolve page calls with ajaxHandler first and as a page last
minor bug-fixes to bugs that wre not reported yet, because they didn't occur yet
(e.g.: nobody tried to compose a comment with >7500 characters yet)
