Removed database_cleaner dependency (#15377).
Merged r12296 from trunk to 2.4-stable (#15376)
Traditional Chinese translation updated by ChunChang Lo.
Traditional Chinese translation updated by ChunChang Lo (#15376)
tagged version 2.4.0
tagged version 2.3.4
Merged r12292.
CHANGELOG for 2.4.0.
Updates for 2.3.4 release.
Branch for custom fields formats refactoring.
Merged r12288 (#15369).
