Added release number combo box to requirement panel, and fixed .equals error in requirement model validator for release numbers.
Merge branch 'dev-feature-releasenumbergui' into dev

Conflicts: Resolved
	RequirementsManagement/src/edu/wpi/cs/wpisuitetng/modules/requirementsmanagement/gui/RequirementsPanel.java
Merge branch 'dev' of https://github.com/alexhenning/wpi-suite-tng into dev