- New shortcuts have been added for "save", "save as", "undo", and
"redo"

-New Undo and Redo pull down menu options, code structure's in place but
not complete yet.

-The OS X menu look and feel is finally done correctly (no longer
relying on a deprecated library)
Pre merge commit
Merge remote-tracking branch 'origin/Andrew_McDonald' into Marc_Anonymouth
-Edit undo and edit redo are complete.
-Modified the Windows shortcut key bindings.

-Modified the Undo/Redo operations a bit. They now will undo/redo
sentence level changes only (both to use as much of the 20 size limit as
we can and to allow the user to backtrack farther with more speed).
-Native Full Screen functionality is now available for those using OS X.
(with corresponding "Enter/Exit Full Screen" menu item and shortcuts).
Merge remote-tracking branch 'origin/Marc_Anonymouth' into Andrew_McDonald