This reworks the activity panel on profile pages. Pick a month and you now see which repos got commits, the issues and pull requests with a preview on hover, and the repos created or forked that month, each with how long ago it happened.
The backend needs a review. getProfileActivity now also returns the repos with commits each month, the repo a fork came from, and when each repo, issue and pull request was created. Bobbin builds this in profile_activity.rs, and tests/aggregation.rs covers it. I edited the Go struct in api/org_tangled/actorgetProfileActivity.go by hand instead of running lexgen, so please check it.
It also fixes a crash when creating a repo: RepoCreationForm read page.data after the page had rendered.
The bobbin tests pass, the Go code builds and passes go vet, and the profile tests and stories pass.