Merge pull request #13 from ggmartins/master

user registration text and links
dependency on bismark-cron, preinst hook to remove old crontab entries
bugfix for preinst hook. removed scriptupdate cleanup
clean crontab on prerm
Add missing fi
Increment release number for bismark-mgmt
Increment bismark-mgmt version
Fix active version and release numbers.
Bump bismark-mgmt version.