Support #999
Update redmine to 2.5.0
Description
Fixes for:
- Mercurial 2.9 compatibility
- Deadlock when delete issues in same time on multiple sessions
- Parent task search and datepicker not available after changing status
- Parent task completion is 104% after update of subtasks
- 500 on admin info/settings page on development environment
- Customfields have a noticable impact on search performance due to slow database COUNT