#516 selectProject falls back on loading commit, when branchName not given and there are no available branches for the project.
#516 selectProject falls back on loading commit,
when branchName not given and there are no available branches for the project.


Former-commit-id: 653568c80275368f12c3f4ded96e85508bbf3c99
webgme/webgme-engine,webgme/webgme-engine,webgme/webgme-engine