4026: admin user can move a project under another user's home project.
Merge branch 'master' into 4026-project-move-admin

Conflicts:
	apps/workbench/test/integration/projects_test.rb
Merge branch 'master' into 4026-project-move-admin
4026: simplify writable check
closes #4026
Merge branch '4026-project-move-admin'