placeholder ticket to overhaul website settings screen

[reusr1]

we need to rethink the settings screen for a tenant. This ticket is a collection of tickets and tasks that should be looked at together

• backup site: layout success message #504
• feature request: download site backup: naming of zip archive #503
• remove the need to go to root page template to change domain names, css and js, etc
• better status reporting of backup before the first backup is created

[flx-sta]

Maybe include:

• Backup info not updating when finishing a backup #509
• "configure your website" page has wrong <title> #510

[ehdatheadwire]

Closing original issue and relocating to enhancements queue: peregrine-cms/enhancements#45

This will likely be grouped together with other UX/UI enhancements.