Merge pull request #68 from greboid/updatersite

Checkout update site.
Merge pull request #69 from greboid/updatersite

Fix incorrect updates site roo.
Basic redirection role.

Needs lots more redirects added.
Probably needs improving.
Merge pull request #70 from greboid/updatersite

Add basic redirect role
Switch to dmdirc-roles nginx-redirects role.
Merge branch 'master' of https://github.com/DMDirc/Infrastructure into updatersite