Added restricted field to network resources. Centralized restricted element functions.
Merge branch 'master' of github.com:glab/ToMaTo into restricted_network
Bug fix
Added authentification flag for restricted network, an authentification check for external networks and some bug fixes
Merge branch 'master' of github.com:glab/ToMaTo into restricted_network
Bugfixes
Bugfix
Bugfix and added a restricted symbol to the network list
Typo-fix
Merge pull request #795 from swuest/restricted_network

Added restricted networks to the backend and webfrontend