Clear the selection when the table be opened

Signed-off-by: tianyuli <tli@wpi.edu>
Make the combo box for status in the table legal. Note that the change between OPEN and INPROGRESS does not work since it cause iteration changes

Signed-off-by: tianyuli <tli@wpi.edu>
Merge remote-tracking branch 'origin/team1-dev' into team1-dev

Conflicts:
	RequirementsManager/src/edu/wpi/cs/wpisuitetng/modules/RequirementsManager/tabs/RequirementListPanel.java

Signed-off-by: tianyuli <tli@wpi.edu>
Merge remote-tracking branch 'origin/team1-dev' into team1-dev