fixes https://github.com/TryGhost/Team/issues/2433
- Moved all outbound link tagging code to separate OutboundLinkTagger
- Because a site can easily enable/disable this feature, we don't store
the ?refs in the HTML but add them on the fly for now in the Content
API.
refs https://github.com/TryGhost/Team/issues/2400
- we've deemed it useful to start to return `Content-Version` for all
API requests, because it becomes useful to know which version of Ghost
a response has come from in logs
- this should also help us detect Admin<->Ghost API mismatches, which
was the cause of a bug recently (ref'd issue)
no issue
- similar to the `mobiledoc` field, the Content API should not return the source `lexical` field if requested via `?formats=`
- renamed `removeMobiledocFormat()` to `removeSourceFormats()` to better match it's behaviour
- This fixture is the main user fixture you'd want to use when testing staff roles
- At the moment it has a weird name that makes it less likely people will use it
- A tiny step in trying to make our fixture system make a tiny bit more sense
refs https://github.com/TryGhost/Toolbox/issues/354
- this commit turns the Ghost repo into a monorepo so we can bring our
internal packages back in, which makes life easier when working on
Ghost
