MOBSDK-647:  Favorites cache does not get updated when a document or folder is unfavorited
MOBSDK-647:  update - Favorites cache does not get updated when a document or folder is unfavorited
MOBSDK-648: Workflow Process Definition dates are not converted
Introduced delay before unit test calls "deleteFolder:" in order to workaround an intermittent server issue
Merge pull request #204 from msaeedi/master

MOBSDK-647

- After some background reading, refactored slightly to a safer option.
Merge pull request #205 from tmughal/master

MOBSDK-648
Merge pull request #206 from mikeh/master

Unit test fix - delay before folder delete