folding half working
half way through refactoring for speed...
Boxes drawing correctly with folding, I think
VerifyKey event handles folding correctly, fixed off by one problem
fixing edge cases
mulitline boxes are pretty happy -- they don't crash when annotations
get deleted by selections.  inline boxes are drawable.

TODO still: make it so you can't delete the annotation by selection;
enable typing inside inline boxes; don't let people paste outside of
boxes.
refactored MultilineBox and InlineBox to extend Box class; should
probably just have an ArrayList of Box, rather than two ArrayLists, and
specialize helper methods.  
Need to tweak allowKeyEventInBox to better support inline stuff
Fixed off by one error, cannot delete annotation via selection, cannot
press enter in inline
Authoring logic (add/remove markers) added at bottom of BCEO code
removed older menu, some syntax stuff
removed giant icon, put in toggle in popup menu.  Added icon.
Refactored some names.
manifest-y stuff for authoring
added check for no annotations found