[IMP] hr modules: needaction, subtypes and department-based improvements.

This commit prepares some cleaning in various hr-related modules that are
about to land in master. There are mainly improvements on subtypes. The
subtypes are now linked to department subtypes, allowing to follow some records
based on the department (like project/task/issue).
[IMP] Project : Add Graph near Task and Issue,rename tab of form,focus + sign when empty kanban view,invisible remaining time when no managing time,don't shoe project name in bow if coming from a project,review default stage and change default group by