Activated and built Japanese language.
Merge branch 'spreed-speakfreely-japanese' of https://github.com/cfrisemo/spreed-speakfreely into spreed-speakfreely-japanese
Update of Japanese language file.
Merge branch 'spreed-speakfreely-japanese' of github.com:cfrisemo/spreed-speakfreely into cfrisemo-spreed-speakfreely-japanese

Conflicts:
	src/i18n/messages-ja.po
Updated and rebuilt Japanese (ja) translation.