We need to change the current page into being a purely "details" page. We need to add /edit page to edit the configuration. Just like with webhooks.

Tasks

• Create separate /edit page
• Update all links to old page to /edit if they were about config changes
• Move connection check to new "details" page
• Show config on details page, but uneditable (no quick actions, no "Update configuration" button)
• Link to "/edit" from new details page
• Add "Delete" button to details page
• Show number of repositories
• Link to repositories page with filter-by-code-host-enabled