Last Transifex pull (064a690) introduced a few control characters
into the Korean translation, which sometimes causes the build to fail.
Manually remove these characters for now to get the build working --
they should still be removed at Transifex too.
Adds three new languages:
- de_AT: German (Austria)
- gl: Galician
- sl_SI: Slovenian (Slovenia)
Updates many others.
Thanks to the translators contributing on Transifex!
- update translation master files
- include current translations from Transifex
- add several new languages
- fix a bug in bitcoin.qrc, which prevents some languages from beeing used
(wrong file extension .ts instead of .qm was used)
