GM: Refactored forms to remove the unnecessary xform filter command
GM: Project share settings cascade to its forms
GM: Refactor project.py to do a single call to get project xforms
GM: Revert to previous way of retrieving project xforms
GM: Refactored code to do a bulk update of the xforms whose status doesn't match the project
GM: Fix flake8 issues and missing imports
Merge pull request #577 from onaio/574-project-public-perm-cascade

574 project public perm cascade