Big docs cleanup.

* Fixed headers including:
  - All rights reserved not All Rights Reserved.
  - name, email@domain.com not name <email@domain.com>
  - tabs and spaces
  - Authors: not Documented by:
* Renamed string.dox to String.dox
* Renamed midixxx.dox files to MidiXxx.dox
* Moved images into images subdirectories and updated Doxfile.
* Re-format all files with tabs instead of spaces.
* Fix many spelling mistakes.
* Added all files, classes, structs, and enums to libbe group.
Update BBuffer class docs.
Move app and support class docs from libbe to libroot.

Also a few more style and spelling fixes.