Update wikis with newer patchset, retaining database
Created by: DemianX0
Use-case: for some changesets I've set up test users, a demo page. I demoed 4 patches from a chain, a small error in the first patch required a rebase of the whole chain and recreation of the 4 patches, setting up a user + main page on all 4 again. I expect I'll be doing this again and again. An option to update a former wiki would make this a snap.