Updated Danish translation
Updated Hungarian translation
Updated Russian translation
Updated slovak translation
Updated Indonesian translation
Updated Serbian translation
Updated Italian translation
Updated Basque language
Updated Basque language
prepare 3.12.0
configure: update version
Updated Slovenian translation
doap: update URLs
Updated Slovenian translation
Updated Swedish translation
Updated Belarusian translation
appdata: update license metadata
Remove fullscreen mode
Add new Start Over and View Puzzles buttons
Replace the toolbar with a header bar