Add getUsers method that returns the number of users in this game
Merge branch 'dev' of https://github.com/cs3733bdt/wpi-suite into dev

# By Jonathan Leitschuh (3) and Jeffrey Signore (1)
# Via Jeffrey Signore
* 'dev' of https://github.com/cs3733bdt/wpi-suite:
  Changed the layout a ton. Top half of create game and active game views now resize with horizontal increases in window size. Bottom halves do not yet resize properly. Also centered and reformatted various components including panels, buttons, etc. Also, Jonathan showed me how to add a default main type for planningpoker active games panel so I dont need to run Janeway each time. Jeffrey Signore
  Adds tests to the GameModel. This proves that data gets properly updated to the model when pushed from the server onto the GUI.
  More refactoring of the GUI to improve encapsulation
  Begins refactoring data verification over to the respective field's classes. This will reduce the amount of repetitive code necessary for data verification