Updated Spanish translation
lang activity, fixed transparency in some images.
lang activity, fixed reference to the zero voice.
Updated Slovenian translation
Updated Greek translation
Updated Czech translation
lang activity, fixed utf8 issue in enter text exercise.
lang activity, removed intro images until we have a voice set for it.
lang activity, made it available in the demo version.
Reverted all gettext domain marking. Compiles, but I need the latest upstream to test because of reread-menu bug
Merge remote-tracking branch 'upstream/master'