KRACOEUS-7671

KRACOEUS-7671
Enable validation for personnel and non-personnel cost.
KRACOEUS-8072
Fix date issue on edit personnel
Fix JPA save issue - updating with new modified object after persist/merge.
Also fixing some minor issues found while testing.
Enabling validation. In edit mode working on a copy instead of actual so that if the edit changes are cancelled after validation messages are displayed, we still retain the old copy with no further error messages.