Add Polish translation and rework some translation stuff
stuff
Merge branch 'zetok-translation'
right click menu on messages to copy without names
..
check LC_MESSAGES before checking LANG

LC_MESSAGES is the standard way to set the language of the displayed messages
if the user wants it to be different than the one set in LANG.
Merge pull request #240 from tsudoko/lc_messages

check LC_MESSAGES before checking LANG
Audiobot