Removing projects field from component view and filtering the activities...

... and milestones by project when creating task from component view + bugfix

* When creating task from a project, project field should not show and the activities, milestones should be filtered list for that project.
* bugfix in change_password
It is correct, but not the optimal solution. I've said several times now that the right solution would be to not add the form element in the first place rather than removing it afterwards.