DW: Added exception handling for doesnot exists exception in project viewset
DW: Checks function in the supported function list
PLD: refactor status function call
PLD: check that method is not none before calling lower
PLD: more descriptive error message
PLD: add field to show xform active status
PLD: remove active, add check_obj decorator
PLD: use wraps add to project serializer
PLD: more check_obj
PLD: revert reversed check
PLD: add downloadable as an updatable field
PLD: update docs to say title is required
Merge pull request #667 from onaio/618_check_stat_function

DW: Checks function in the supported function list
Merge pull request #659 from onaio/590-project-doesnt-exists-error

DW: Added exception handling for doesnot exists exception in project vie...
Merge pull request #657 from onaio/add-active

Use decorator to check for object in serializers
ME: added 'metadata' fields to user profile model and serializer
ME: added tests to check if profiles have metadata attribute
ME: added metadata fields to the model and the serializer
ME: added a migration file to update the user profile model
ME: added metadata field to user_profile_data return value