More nodes and edges
Front page changes
Merge pull request #253 from fgiannar/develop

Develop
Merge branch 'develop' of https://github.com/cassandra-project/platform.git into develop
Merge pull request #257 from fgiannar/develop

close #256, implemented #212
Merge branch 'develop' of https://github.com/cassandra-project/platform.git into develop
Merge branch 'develop' of https://github.com/cassandra-project/platform.git into develop
CSN Node&Edges
CSN Graph, Node and Edge manipulation OK
WS test code added
Merge branch 'develop' of https://github.com/cassandra-project/platform.git into develop
Merge pull request #258 from fgiannar/develop

close #154, close #197
total_size field added to the GET Installations query
Merge branch 'develop' of https://github.com/cassandra-project/platform.git into develop
Merge pull request #54 from cassandra-project/develop

Develop