Added nickname field to User class
Switched back to in-memory Dictionaries instead of databases for now
Added GameId field to MoshAppServiceBase , for ease of determining a player's current Game
Endpoints cache results to avoid going back to the database on subsequent requests. More validation for invalid requests (such as, "/users", note the missing id value)
Added nickname fields to in-memory user "database".

Changed campus IDs to coincide with the IDs in the database.