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
Yes, I am working on setting the subscriptions for tasks, as done in the DRMP template. 
I suppose this wasn't a fancy GUI trick, S3OptionsFilter JS not working made activities, milestones not updatable, affecting the workflow. Anyhow, thanks for the help regarding this :)