added task member search, fixed ordering
updated text in applied task member email
model factory adjustments for Task
Merge pull request #660 from onepercentclub/feature/BOOK-646

model factory adjustments for Task
Merge pull request #662 from onepercentclub/feature/BOOK-640

updated text in applied task member email
Merge pull request #663 from onepercentclub/feature/BOOK-644

added task member search, fixed ordering
Merge remote-tracking branch 'upstream/release/booking-sprint-7' into feature/BOOK-647
removed signature. Is moved to base