Removes the old Decks class that is now unused
Adds documentation to the NumberJTextField
Updates the game test to use the new deck model
Merge branch 'dev' of https://github.com/cs3733bdt/wpi-suite into dev

# By dcuzunoglu
# Via dcuzunoglu
* 'dev' of https://github.com/cs3733bdt/wpi-suite:
  Fixes the failing ActiveCardsPanel tests. Adds headers to notification test classes and updates the notification tests classes.