Game can no longer be created with a start date in the past

The system now checks whether the start date is in the past when the 'Create Game' button is pressed.
Changed tree names to 'New', 'Open', 'Closed' to make it more clear what is what

Contributors: bnurbekov, mamora, sfmailand
Merge branch 'sbl-dev' of git://github.com/struct-by-lightning/wpi-suite into sbl-dev
Merge remote-tracking branch 'origin/sbl-dev' into sbl-dev

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetng/modules/PlanningPoker/view/NewGameTab.java
Moved Mailer from Janeway to PlanningPoker
It's better for modularity and keeping our stuff within our own project.  And it actually works this way now.  No idea why it wouldn't work out of Janeway before.

The next step for the email is to actually set up a mock network and database to write test cases to make sure the user controllers work. Once that is done, then we hopefully we will have reorganized the game enough for me to figure out where we can safely put all out database-related objects.

Signed-out-by: Alec Thompson - ajthompson
Merge pull request #105 from bnurbekov/sbl-dev

Header: Disables warning when user closes tab after the game has been created
Merge pull request #104 from ajthompson/dev-email

Moved Mailer from Janeway to PlanningPoker
Merge pull request #101 from sfmailand/sbl-dev

Changed tree names to 'New', 'Open', 'Closed' to make it more clear what is what
Header: Fixes the error with Mailer import

Reported-by: ajthompson, bnurbekov
Signed-off-by: Batyrlan Nurbekov <bnurbekov@wpi.edu>