Bitbucket import: broken PRs
In Heptapod 0.6.1, the Merge Requests imported from BitBucket are severely broken:
- authorship is missing (same as #102, won't be further adressed in the present issue)
- there's a red frame saying "We cannot render this merge request properly because <source branch> does not exist in <project>. Please close Merge Request or change branches with existing one"
- only the main description is properly displayed.
The reasons are
- source branch name hasn't been converted to our conventions for Mercurial named branches (i.e., `branch/source_branch`)
- received shas for source and target branch heads don't make sense for our current GitLab
issue