Renamed variables in NewGameTab for readability

Renamed panes and variables so that the names were relevant (instead of panel_1, panel_2, etc.). The new variable names should help to make the code self-documenting. Comments were also added to help distinguish which areas of code corresponded with which panes.

Also fixed calendar variables to comply with windowBuilder.
Hey Zak guess what I MERGED YOUR CRAP

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetng/modules/PlanningPoker/view/NewGameTab.java