Figuring out how to connect after configuring a bridge is a pain point

Usability testing of the Connection settings redesign conducted in tpo/ux/research#52 (closed) & tpo/ux/research#78 (closed) has highlighted a pain point: some participants found it difficult to figure out the next step after configuring a bridge. Often they seem to pause after clicking the blue OK button, presumably believing that this is enough to connect.

At present, these users need to either:

1. Scroll back up to the purple banner at the top of the page, and click Connect – or:
2. Return to about:torconnect and click Connect there.

However neither of these routes are obvious initially.