---
- groups: groups = GET /groups
- group: group = GET /groups/:group_id
- create_group: POST /groups?
- transfer_project: POST /groups/:group_id/projects/:project_id
- delete_group: DELETE /groups/:group_id
- search_groups: groups = GET /groups?

- group_members: members = GET /groups/:group_id/members
- group_projects: projects = GET /groups/:group_id/projects?
- add_group_member: POST /groups/:group_id/members?
- edit_group_member: PUT /groups/:group_id/members/:user_id?
- remove_group_member: DELETE /groups/:group_id/members/:user_id