Adds ActiveCardsPanel tests. Removes unused imports and doClicks method from ActiveCardsPanel
Add the functionality to check if any components on the create game panel have changed. Show the pop up warning window only changes have been made.

Tianchang Gu, Tony Garside, Jordan Wetzel
Merge branch 'dev' of https://github.com/cs3733bdt/wpi-suite into dev

# By dcuzunoglu (3) and others
# Via dcuzunoglu
* 'dev' of https://github.com/cs3733bdt/wpi-suite:
  Adds ActiveCardsPanel tests. Removes unused imports and doClicks method from ActiveCardsPanel
  fixes the MainViewTest
  Changes error label for End Date verification
  Create game and Create Deck panels now automatically select their name field when opened.
  removes unused imports, unused variables and some other warnings from tests
  Modify invalid end date error message.
Merge branch 'dev' of https://github.com/cs3733bdt/wpi-suite into EndOnTime