Added more translations from launchpad, fixes #216

Added the following languages to Remmina:
Arabic, Asturian, Bengali, Bosnian, Catalan of Valencia, English (Australia),
English (UK), Estonian, Finnish, Galician, Hebrew, Croatian, Japanese,
Khmer, Kannada, Korean, Latvian, Malay, Burmese, Norwegian Bokmal,
Occitan (post 1500), Portuguese, Romanian, Shan, Sinhalese, Slovenian,
Albanian, Serbian, Teleugu, Uyghur, Chinese
Merge pull request #336 from giox069/gtk3

Added more translations from launchpad, fixes #216