Updated requirements document.
Updated requirements text.
Implemented database fail over to a list of configured database servers.
Fixed legacy configuration database access.
Log message style fix.
Added chmod to change configuration file to only web server readable and writeable.
Implmented Sahara authentication off a Moodle database.
Allow authentication types to transform usernames. This is used by the Moodle authentication type to prefix names.
Implmented authorisation based on Moodle enrolment.