Screen Size Fixes

I introduced some code that will track the applet's width and height
more correctly. I also made some other changes to make the right-side
interface flow more properly.
Added ToggleButton

The ToggleButton class adds a button that can be switched between the
true and false states. I am going to use this for toggling Auto-fire and
the safety on a Ship's weapons.
Fixed Button Class

The change I made makes buttons able to be clicked. It fixed a recent
change that changed some of the code for how button collision works.
Made Changes to Interface Code

The buttons should now work more properly.
Modified Ship Class Plus Slight Interface Change

I made it so that the two ToggleButton objects are used to toggle
settings for all of the Ship objects. Also, I changed Order parsing so
that it removes any Orders that repeat the same type. The final change
that I added at the last second was to have text display disabled on
inactive Buttons, and to have inactive (as in not accepting input, not
the toggle state) ToggleButton buttons display as off and without text.
Color Selection For ToggleButton

The "on" state of a ToggleButton can be chosen, but only after the
button is created.
Interface Improvements

Code has been written so that the currently added Buttons on the
GameMenu will be usable. Also, I fixed some display code for Entities,
so that they appear in the right spot. Finally, I'm temporarily having
Entity objects display as spheres again because of a problem with
creating the polygons used to represent them.
Slightly Fixed Username Code

With the new change, I'll be able to more quickly change the username of
a Client while testing the game.
Removed Data Value

It wasn't being used, so I removed it. If it IS being used, REVERT THIS
COMMIT!!!
Interface Additions

I added the Slider class, which will be used for controlling the
throttle on Ship objects.
Made GameMenu Buttons More Dynamic

The Ship controls in the GameMenu interface will turn off if more than
one Entity is selected or the only Entity isn't a Ship.
Quick Change