UK: set name for roles
UK: add ShareXForm model
UK: add ShareXFormSerializer
UK: code refactor - have a specific function to create a profile for tests
UK: add a share xform endpoint, closes #269
UK: fix test
PLD: use in check
PLD: build roles map using list iteration
PLD: set status us kw
PLD: test against all roles
UK: remove all permissions for user on object, and set role specifc permissions
UK: test role reassign owner to editor
Merge pull request #328 from onaio/269-xform-share-endpoint

xform share api endpoint