Added missing "Space info" translation
Added missing 'like' / 'unlike' translation
Hide private spaces in Directory -> New Spaces panel
Updated translations (translate.humhub.org)
Updated translation files
Add table alias to Space scopes
Fixed possible XSS injection during installation (thanks to Ole Aass)
Only show visible spaces at directory space sidebar
Visibility not correctly saved on space creation
Added Ukrainian language files
Added dashboard message files
Merge branch 'master' into develop