[4933] Dropdown list is now sorted alfabetical.

https://gist.github.com/8r2y5/71628d8e855f44c461bb - pylint & nosetest
https://bugzilla.stxnext.pl/show_bug.cgi?id=4933 - ticket
This will work only for cases where Ł is upper case. Find a better way to sort alphabetically with polish letters.