Rewrite Reach Frontend to account for new PSQL backend

[SamDepardieu]

Description

This PR upgrade Reach's Frontend to use the new API relying on PSQL:

• Templates now returns mock rows on first load
• No results page is now an html rendered JS template litteral
• Upgrade Reach brand to include alpha on contact page

Type of change

• [x] :sparkles: New feature

How Has This Been Tested?

Local tests (Relying on prod database's data make docker-test