Corrected Indentations before I make some changes so that it is easier to see the change later on
refactored the test comobo box code out of the initComponents()
because we will want to override/change how the panel is created.
But we want to keep this drop box so we still have access to the
other test cases for now.
Subclassed TestbedSidePanel in order to create our own controlling
panel for our project.
Making VertexTest to be the first test on top of the combo list
(Heavy) refactor on TesbedSidePanel so that it is easier to provide
our own panel from its subclass (ours : VertextTestPanel.java)
Now, we can simply override one function
	createSubPanels()
and create each panel within it and add it to this object (which
happens to be JPanel).
In TestbedMain.java, for now, I am simply creating our subclass object.
But this could be configurable, that this is good for now.
Merge pull request #4 from karpark/newControlPanel1

First change enabling the the ability to provide customized panel to jbox2d test bed panel.