ME: added test: anonymous users can access shared data when accessing media endpoint
ME: anonymous users should access shared data when accessing media enpoint
ME: changed the super class to 'DjangoModelPermissionsOrAnonReadOnly'
UK: allow authenticated_users_only=False, updated tests
UK: for anon users shared_data=True
ME: refactored the calcluation of 'day' variable
ME: refactored 'expired' function and moved it outside the class
ME: refactored 'get_temp_token' function; generate new temp token if expired
ME|PLD: changed added tests for temporary token
JZ/PLD: increase #processes decrease max request time
Merge pull request #742 from onaio/up-processes-down-max-request-time

JZ/PLD: increase #processes decrease max request time
Merge pull request #741 from onaio/refresh-temp-token

Refresh temp token
DW: Owner cannot remove self from project if there is no other owner
DW: Corrected flake8 issues
DW: Checks if user is less or equal to one
ME/DW: Added remove user serializer