Correct site links for Live launch

* Update GOV.UK template
* Remove Beta banner/colours
* Terms and conditions
* Remove Welsh link
* Remove Help link
* Correct Cookie link

Finishes #78363302 #78363422 #78363182 #78363034
Rename service to "Visit someone in prison"
Remove progress bar

Finishes #75354824
Redirect to start page
Assited digital link on first 3 steps
Merge branch 'ad_notice' into live-release
Merge pull request #39 from ministryofjustice/live-release

Live release