improve look of gateways widget
Do not use regex to check filetype to avoid being wrong since . is a regex metachar. It fixes #3817
improve/tidy up interfaces widget
Merge pull request #1268 from CharlieMarshall/gatewayWidget
Fix match for help pages privileges, it fixes #3777
Remove blank line if only an ipv6 address is in use
Merge pull request #1261 from CharlieMarshall/improveInter