The project list will contain all public projects, user is a member of this project, or user is in the group which is a member of this projects.
Change the behaviour of user roles, if the user is not a member of this project, then return the user's groups role of current project
1) Remove the previous /api/projects/?:project_id/members/:userid
2) Move the /api/projects/:project_id/projectmembers/?:pmid to
/api/projects/:project_id/members/?:pmid
3) Change the project member maintain ui to call new REST API