Creates a basic framework for a Session Model for Planning Poker.
Implemented "active" field and "isActive()" function in PlanningPokerSession
Adds basic skeleton for sessions entity manager.
Update the functions isActive(), activate(), and constructor; Add misc. getters and setters

Adde getters and setters for name and ID fields
Remove arguments from constructor (Values will be set after it has been created)
Model contains an ArrayList of all of its requirements that are up for voting
	-> Used for determining if the model can be activated
creates PlaningPokerRequirement
Adds iscancelled, cancel, and isDone implimentations

Manny DeMaio
Louie Mistretta
Merge dev onto dev-sessions
Adds basic skeleton for sessions entity manager.
Modifies Method for determining state of activity for session model

Session now checks whether or not it has a start time to determine if it is active.
Setting it to active sets the start time to a non-null date.
Adds end time to cancel functions
Manny DeMaio
Louie Mistretta
Merge branch 'dev-sessions' of github.com:Team-Combat-Wombat/wpi-suite-tcw into dev-sessions
Cleans up PlanningPokerRequirements
nakalamvokis mattjsuarez creates planningpokerrequirement class
nakalamvokis mattjsuarez creates planningpokerrequirement class
Merge branch 'dev-sessions' of https://github.com/Team-Combat-Wombat/wpi-suite-tcw into dev-sessions

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetcw/modules/planningpoker/models/PlanningPokerSession.java
Merge branch 'dev-sessions' of https://github.com/Team-Combat-Wombat/wpi-suite-tcw into dev-sessions

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetcw/modules/planningpoker/models/PlanningPokerRequirement.java
	PlanningPoker/src/edu/wpi/cs/wpisuitetcw/modules/planningpoker/models/PlanningPokerSession.java
Corrects formatting and adds necessary javadoc
Corrects formatting and adds necessary javadoc
Merge branch 'dev-sessions' of https://github.com/Team-Combat-Wombat/wpi-suite-tcw into dev-sessions

Conflicts:
	PlanningPoker/src/edu/wpi/cs/wpisuitetcw/modules/planningpoker/models/PlanningPokerSession.java
nakalamvokis mattjsuarez creates planningpokerrequirement class