ME: included 'created_by' property in projects endpoint
ME: added a check for 'created_by' in 'test_projects_list' test case
ME: removed 'created_by' check to see if the test will still fail on travis
ME: added 'created_by' to excluded properties in project_serializer.py
ME: reverted to earlier changes; removed created_by from exclude property and added an assert in test_projects_list
Merge pull request #527 from onaio/526-return-project-creator-on-projects-endpoint

526 return project creator on projects endpoint
PLD: WIP set var if profile for org or not
PLD: fix imports and tests, closes #530
PLD: use attribute to try to get org profile
PLD: update profile data mocks
PLD: sort xform data lists
Merge pull request #531 from onaio/530-is-org-in-profile

530 is org in profile
ME: added id_string property that returns id_string in lowercase in XForm model
ME: added lower case conversion of form id_string
ME: added a checker; checks if id_string is converted to lower case when form is being saved
ME: id_string conversion to lower case before saving
ME: changed instances of username to lower case and added tests in onadata/apps/viewer test classes
ME: added tests; checks if URLs with uppercase usernames return 200 status code
ME: fixing merge conflict