- Adjust limit to not have a gap of 1 exactly at MAXQUOTA
- Add a date/time stamp to the log + slight rewording
- Send an X-Weave-Quota-Remaining header to the client
modified function 'validate_collection' to allow characters '?' and '=' in the collection string which e.g. appear if the following request is send from firefox: http://<server>/weave/1.1/<user>/storage/clients?full=1