pfSense

When renaming or deleting a virtual server, clean up the old relayd anchor name. Otherwise the rules are still there and valid, and will cause problems as they will override the new VS settings. Also clear out the anchors when stopping relayd or starting fresh that way no old settings could conflict.

Improve sh syntax using ${} for all variables

Also take dhcpv6 into consideration even here.

Display pfSense interface name on status interfaces

Sometimes it is a bit difficult to work out which interface descriptive name is which pfSense internal interface name (wan, lan, opt1, opt2...). It is useful to know for:
a) hardware that has wan, lan, opt1... pre-printed on the case (some Alix cases for example), making it easier for less-trained remote office staff to work out which cable corresponds to which interface in pfSense....

Relax advanced options firewall rules tests

Various advanced options are now possible for any protocol since https://github.com/pfsense/pfsense/commit/653bde345e8f960de5bc745fe74e64d8ef3fd2d3
So allow these through the front-end GUI validation also.

Fix double-click to edit on OpenVPN CSC entries

Remove prior CSC entry when cleaning up. Fixes #3143

Make sure an alias is not used by a static route before delete, ticket #2941

Merge pull request #770 from individual-it/master

Fix check for existing IP Address in DHCP mapping

Merge pull request #768 from CharlieMarshall/dyn

tiny cosmetic change