Created Tree Branch
Includes Tree Model and Node Classes
Copied Controller and RequestObserver from ListView to retrieve Requirements from the database
Added Iteration class.
Added some background edit functionality and a mode enum.
Fixed nullPointerException
Updated some database interaction stuff to use a create observer instead of just using the update observer.
moved the list viw table to the dashboard along ith the refresh button
The files in Iteration package need to be modified. They do not build for now. The ToolbarPanel works fine.
took away the save changes button on the toolbar and the list button
Added several buttons to the home button group for CRUD operations.
Added autorefresh functionality to the table of requirements. This still needs
a bit of work. I did it in a somewhat jenky manner.
Also added minor table changes. First column now has ID. Column widths are
more suitable. And columns are no longer rearrangable in JaneWay.
Tree will now load in requirements when it is focused (on start up)
Refresh Button loads in requirements (will make it auto-refresh later)

Bug: Refresh button will re-add requirements that are already in the list
Put in some more files for the Iteration model. Cleaned up some code. Put in basis Iteration tests.

Signed-off-by: Tushar Narayan <tnarayan@SL123-17.admin.wpi.edu>
When a selection is made in the table, you can now use getSelectedRequirement to find the id of the selected requirement.
Cleaned up code, and deleted unused files.
Moved the list of requirements back to a tab. Autorefresh does not work anymore
Added a nested tab pane in to requirements to hold attachments, notes and history
Merge remote-tracking branch 'origin/team1-gui-nested-tabs' into team1-changeStatus
More changes to the Iteration packages. It does not build yet.
Merge branch 'team1-iteration-class' of github.com:/cmdunkers/wpi-suite-tng into team1-iteration-class

Conflicts:
	RequirementsManager/src/edu/wpi/cs/wpisuitetng/modules/RequirementsManager/Iteration/IterationPanel.java
	RequirementsManager/src/edu/wpi/cs/wpisuitetng/modules/RequirementsManager/Iteration/SaveChangesAction.java
	RequirementsManager/src/edu/wpi/cs/wpisuitetng/modules/RequirementsManager/Iteration/SaveIterationController.java