Added check and exception throw when used already voted
Fixed Kick(username) such that it stops throwing exceptions.
move database connection implementations and interface to folder
changed gamecontroller to be more flexible to the DatabaseConnectionInterface
streamlined the DatabaseConnectionInterface to only contain functions that are necessary for loading and saving Game information
implemented ienumerable and indexer on UserCollection
implemented the new DatabaseConnectedInterface for the MemoryDatabase
removed unused methods
implementation of the new DatabaseConnectionInterface on the filestorage
you cannot add a user with the same name as a user already in the game
exception handling for the general exception
Merge branch 'master' of https://github.com/SegfaultWizards/GithubPlanningPokerWebservice

Conflicts:
    Webservice/Webservice.csproj
Merge branch 'moveLogicToGameControler'
override equals in user