Fixed zone configuration generator for IPv6. Also fixed configuration sync.

Added a new option "reversv6o" that enables proper zone-name creation for ipv6 reverse zone. Also now supporting AAAA address with letters (whereas only numbers were supported until now). Added logging to sync and fixed an error reading the config xml.
Added more description on the two settings
Added a new checkbox for IPv6 reverse zone.
Merge pull request #1 from cuteredstorm/patch-1

Patch 1