Added email notifications for closing a game
To test:
1. Close an open game.
2. Check the console for Janeway - there should be output that the email was sent, and the addresses it was sent to.
3. Check mailtrap to check the text of the email.

The email and password for Mailtrap are struct.by.lightning@gmail.com and team6password.

Committed by: Alec Thompson - ajthompson
Merge pull request #251 from ajthompson/endgame-email

Added email notifications for closing a game
Merge pull request #250 from friscis/sbl-dev

Adds checks for number of votes so user can always open a closed game
Add feature: Only show new games and start buttons to moderator of a game.

Reported-by: hlong290494
Signed-off by: Long Nguyen Duc Hoang <lhnguyenduc@wpi.edu>
Merge pull request #252 from hlong290494/moderatorView

Only moderator can see his/her new games.
Disable the ">>" (Add all) button when there is no requirements.
Delete NewGameView.java because it is not used anymore.

Reported-by: hlong290494
Signed-off by: Long Nguyen Duc Hoang <lhnguyenduc@wpi.edu>
Restore accidentally deleted NewGameView.java
Merge pull request #254 from hlong290494/addAllDisabled

Disable the ">>" (Add all) button when there is no requirements.
Stops the index of current requirement from reseting which keeps statistics from changing
swconley, friscis, mamora