templates/origin-save: Add a "Save again" button in requests list
When clicking on it, the save request submission form will be automatically filled with the origin info related to the associated requests table row and the view will be scrolled to the top.
Also rename "Visit type" to "Origin type" ast it is more comprehensible for non swh staff users.
Closes #2325 (closed)
Depends on !358 (closed).
Migrated from D3364 (view on Phabricator)