BOOK-563, in task admin page added deadline and removed last changed date
extended filter for accepted members before changing status
Merge pull request #636 from onepercentclub/feature/BOOK-563b

Feature/book 563b
Merge pull request #637 from onepercentclub/feature/BOOK-627

Feature/book 627
Add task realized mail html tpl
Added help text

- added help text BOOK-628
- added help text BOOK-632
Merge branch 'release/booking-sprint-7' into feature/BOOK-628

Conflicts:
	bluebottle/bb_tasks/templates/bb_tasks/task_edit.hbs
Merge pull request #639 from onepercentclub/feature/BOOK-628

Feature/book 628
Task realised. NOW!
Last changes help text

- removed transparant background
- added exception for help text modal
Fix how taskmemeber status is displayed
Merge pull request #638 from onepercentclub/feature/fix-task-realized-mail

Feature/fix task realized mail
Merge pull request #640 from onepercentclub/feature/BOOK-638-639

Feature/book 638 639
Merge pull request #641 from onepercentclub/feature/book-625-634

Feature/book 625 634
updated tpls for task member to include evaluation links
Merge pull request #644 from onepercentclub/feature/BOOK-643

updated tpls for task member to include evaluation links
added task member search, fixed ordering
updated text in applied task member email
readded task closed no task member mails
model factory adjustments for Task