[Bf-funboard] Improvements to 3D viewport menu and

[Brian Ok]

While the Blender application window is maximized, when a user changes the
window type of the middle window (the window initially set to "3D View") to
"Button Window" some of the buttons being displayed in the window are cut
off from the sides of the screen.  This makes the user unable to use those
buttons from the middle window.  It would be nice to have the buttons inside
the window automatically resize to fit inside of the window or for there to
be a scroll bar somewhere to view the other buttons placed off screen.

In addition, zooming in and zooming out work great, but it would be nice to
have some relative view ratio indicator on screen somewhere.  It could be
arbitrary, defined by the developers, or maybe to a reference object.