update pl.po

some fixes, and new translations.
Update hr.po
Update hr.po
Update hr.po
Merge pull request #310 from nalesnikld/master

update pl.po
Merge pull request #311 from win32re/patch-27

Update hr.po
Merge pull request #312 from win32re/patch-29

Update hr.po
Merge pull request #315 from darthxjanus/patch-13

Update hr.po
Update hr.po