Converted annotation lettuce test into bok-choy test.
TNL-353
Merge pull request #5404 from edx/waheed/tnl353-wrote-annotation-bok-choy-test

Converted annotation lettuce test into bok-choy test.
TNL-172: Change type of a previously posted post.
Make the thread_type field updatable.
Make sure 'Marked as Answer/Unmark as answer' is present when thread type is question and not when thread type is discussion.
Update ThreadView on save.
Fixed Jasmine unit tests.