Added menu 'Check for updates'
Fixed restriction Srv_startActivities

Fixes #1853
Check storage state for update menu
IntentFirewall only in 2.99+
Add quirk for test versions
Allow updates for 2.x versions
Updated Dutch translation
2.2.4 test
Revert to v2.99
Add image title
Updated meta data (XP3)
Updated changelog
Server: fix duplicate content description
Check content type
Updated changelog