This patch allows the much requested selection of individual instances of modules within a course to backup and restore.
It needs A LOT of testing and probably some prettyifying too.
Also altered the bb5.5 importer:
* Respecting certain "visible" flags
* Made the default course properties match the importer capabilities better
* Fixed the resource summaries
* Converting Bb "Staff Information"
Completely untested by me but it LOOKS like it should work. It's quite
standalone, and is basically a single function call during the restore
precheck which looks in the backup to see if it's a BB file, then
converts it using XSLT.
Apart from a little tidyup and renaming, I added a check so that it
should just silently fail if XSLT functions aren't available
Many thanks to Ziba Scott <ziba@linuxbox.com> who wrote it!
Charles Fulton