#1015 Prohibit multiple openings of a project. (#1048)
#1015 Prohibit multiple openings of a project. (#1048)



Former-commit-id: aabd95bb4c7d23b0d9ba205131c187c2f179a68a
webgme/webgme-engine,webgme/webgme-engine,webgme/webgme-engine