Hard coded refs to pi.hole in Beta 5 Web UI

[jfb]

This thread and pull request may have some history of interest.

Redirect pi.hole to pi.hole/admin

As is, I keep on going to pi.hole in order to view the dashboard and keep having to go to pi.hole/admin instead. As it is now pi.hole doesn't appear to have much of any purpose so it should not interfere with anything to setup a simple URL redirect to make accessing the administration console just that bit easier. Thank you. Cross posted from github at Redirect pi.hole to pi.hole/admin · Issue #1153 · pi-hole/pi-hole · GitHub at the request of Mcat12.