Add “Save code now” to the Visits page

When looking at the “Visits” tab for a given origin, you can see when the last visit was made. If you are monitoring your own project, it is probably then that you would notice “Oh, it’s been quite some time” and have the desire to see a more recent copy made. The easiest would probably to add a button labeled “Save now!” right next to the last visit date.

(This was noticed during demos at DGD-I seminar on September 2022.)

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Migrated from T4553 (view on Phabricator)