Moved logic to enum. Fix bug causing lessons kbd not to be updated
Fixed bug causing strange things when Hide/Show was pressed
Merge branch 'master' into next
Remaining items feature provided through item search dialog
Centralized item cache
Implemented "filter up to user level" filter
Implemented image radical cache
Simplified sorting options (filter by level implicit)
Enabled missing filters
Made itemcache serializable to allow being put into the bundle

This was needed because otherwise the landscape "side screens"
layout is not set
Fixed missing serialization
Candidate 1.4.0 release