refs https://github.com/TryGhost/Team/issues/2393
- During boot and loading the active theme, we now cache the result of
the gscan validation. Cache configuration can happen in
`adapters.cache.gscan`
- We now also return non-fatal errors when activating or adding a theme.
- When the `themeErrorsNotification` feature flag is on, we fetch the
active theme (which includes the validation information) when loading
admin
- If the currently active theme has errors, we show an error
notification that can open the error modal
- Added a new endpoint: `/ghost/api/admin/themes/active/` that returns
the result of the last gscan validation of the active theme. If no cache
is available, it will run a new gscan validation.
- Added new permissions for the active action/endpoint (author, editor,
administrator)
closes https://github.com/TryGhost/Ghost/issues/8127
- update theme activation to manually set other themes to `active: false` in the store now that we only the active theme back from `/themes/:name/activate` endpoint
- move theme warning list item rendering into `{{gh-theme-error-li error=x}}`
- add `theme-warnings` modal that accepts a warnings list, title, and optional message
- after activating a theme, check if the theme has any warnings or errors and display an appropriate modal informing the user
requires https://github.com/TryGhost/Ghost/pull/8093
- adds `theme.activate()` method and associated adapter method for activating themes rather than relying on `settings.activeTheme`
- minor refactors to the `modals/upload-theme` component to use a full theme model
