- Add columns for sorting in kolab_cache_contact
- Extend bin/modcache.sh script to update existing cache records
- Add setters for ORDER BY and LIMIT clauses
- Adapt the kolab_addressbook plugin to fetch contacts page-wise
ATTENTION: This changeset contains database schema changes!
Run `bin/updatedb.sh --dir plugins/libkolab/SQL --package libkolab`
Afterwards, the cached data needs to be updated. To do so, either run
`plugins/libkolab/bin/modcache.sh update --type=contact`
or execute the following query
DELETE FROM `kolab_folders` WHERE `type`='contact';
