fixes https://github.com/TryGhost/DevOps/issues/99
- this inlines the `monobundle` script into the monorepo from an
external repo in order to avoid some caching issues we've seen
- it also makes it easier to maintain because you can change the script
alongside changes in the monorepo
refs TryGhost/Product#3510
- Added `TryGhost/Source` as a submodule in `ghost/core/content/themes` so `Source` will ship with Ghost (along with Casper)
- With this change, new installs will use `Source` as the default theme. Existing sites will have `Source` installed, but not activated, as this is a large change and we don't want to drastically change existing sites without warning. Users can upgrade to use `Source` simply by clicking 'Activate' in design settings.
- Updated protections to prevent users from uploading their own conflicting version of `Source`
refs https://github.com/TryGhost/Ghost/issues/17932
- we were missing `chunk.208.dbf172ad32f72f21a5dc.js` from our published tarball
- turns out this is due to the lines in the `.npmignore` file to remove
.db files, which also matched this file
- we can make the regex more specific to avoid these cases
- we ignore some files within Casper via the Core .npmignore, but this
was outdated
- `.csscomb.json` and `.yarnrc` do not exist in the repo anymore
- `yarn.lock` should be added because this is the bundled theme files
and we don't expect to be editing them again
refs 0a34be4012
- as of the referenced commit, we no longer store the HTML in the
core/server folder so we don't need to keep this folder in the
npmignore
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
