File re-org, support uploading and deleting main photos

Add latest changes.
Including:
allow uploading of photos from main admin UI
finished most work to support deleting photos from main admin UI
reorganized files
Cleaning up files, add feature diagram, add file to convert HTML chars

Forgot to add toolbar.inc in last check-in
Adding text file with feature list
Adding file used to convert characters to HTML-friendly ones. Could be
useful later.