Merge pull request #28 from renoust/interface

Interface
Server side: removed initial random
                           managing all given properties returned to client

Client side: new 'update graph' functionnality to keep one full graph in memory instead of returning partial graphs
Merge pull request #29 from renoust/PDP

Pdp
Merge pull request #30 from renoust/engine

Engine
Merge pull request #31 from renoust/master

Updating
Merge pull request #33 from renoust/engine

Engine
Merge branch 'PDP' into interface