Added icense info to enum files and adding contributor files.  Files edited include Priority.java, RequirementActionMode.java, Status.java, Type.java, and IterationActionMode.java
Added license information to the following files:
AddIterationController.java
AddRequirementController.java
IReceivedAllRequirementNotifier.java
IRetreiveIterationByIDControllerNotifier.java
IRetreiveRequirementByIDControllerNotifier.java
Put license information in remaining controller files:
QueryUserController.java
QueryUserRequestObserver.java
RetrieveAllIterationsController.java
RetrieveAllRequirementsController.java
RetrieveAllUsersController.java
RetrieveIterationByIDController.java
RetrieveRequirementByIDController.java
SaveRequirementController.java
Added license file and contributor infomation to:
IterationDatabase.java
RequirementDatabase.java
IterationEntityManager.java
RequirementsEntityManager.java
UserEntityManager.java
InvalidDateException.java
IterationIsNegativeException.java
IterationNotFoundException.java
RequirementNotFoundException.java
Merge branch 'dev-set3-iteration3' of https://github.com/333fred/wpi-suite-tng into dev-set3-iteration3