cleaned up files: updated require sections, removed references to arsdigita and openforce, and replaced out-of-date owner info. Most of these edits were done by hand due to bug 1106; I tried to do the same things the APM would do (remove file sections, etc) and updating the release date to today
1. Added support for retrieval of live revision of files by their URL (a.k.a. virtual URLs). This will make relative linking of images and sub-documents in HTML documents work. As a small bonus, HTML and text documents will be templated, but only if they are being stored in the db. Files stored in the file system look like before ... 2. Provided upgrade scripts for file-storage and the CR.