Lang changes

Backported from !587 (merged) !588 (merged) !591 (merged) !602 (merged) !609 (merged) !610 (merged) !611 (merged) !612 (merged) !613 (merged) !626 (merged) !627 (merged) !629 (merged) !648 (merged) !655 (merged) !656 (merged) !657 (merged) !716 (merged) !743 (merged) !809 (merged) !810 (merged)

Added missing strings which weren't added in !1000 (merged)