closes#11085
- Ghost has been using YAML format for other configurations (e.g. routes). The plan is to move to this format for all user-edited settings files. By default JSON format is still used in Ghost Admin API v2/v3, but will be changed to YAML in API v4. Check referenced issue for more context.
- New format supports all the features available before. The main noticeable change is the structure of config file. It is now grouped by redirect HTTP code instead of specifying `"permanent": true | false` attribute for each config property. Example format for YAML config:
```
302:
/from-url/: /to-url/
301:
/category/([a-z0-9\-]+)/i: /tag/$1/
/v([0-9\.]+)/docs/([a-z0-9\-]+)/i: /docs/$2/
```
- Added 2 new endpoints: `POST redirects/upload` and `GET redirects/download`. These serve as an alias to current GET/POST `/redirects/json. "upload/download" naming pattern is introduced to match the convention with other resources that can be uploaded and downloaded (images, themes etc.). `/redirects/json` endpoints will be removed in Admin API v4
- The parsing code from `custom-redirects.js` has been moved to `frontend/services/redirects/settings.js`. This location is more appropriate for this logic and eventually `custom-redirects.js` middlewear might be moved into "frontend" as this middlewear plays a role mostly effecting that area.
no issue
- centralises definition of max width and allows customisation if needed
- allows for passing of the config value through to rendering libraries
no issue
- adds a set of hardcoded "content image sizes" to the base config
- adjusts `handle-image-sizes` middleware to always allow the hardcoded content image sizes to be genreated
- updates `@tryghost/kg-card-factory` to allow passthrough of options to card renderers
- updates `@tryghost/kg-default-cards` to add `srcset` output for image and gallery cards
* moved `server/config` to `shared/config`
* updated config import paths in server to use shared
* updated config import paths in frontend to use shared
* updated config import paths in test to use shared
* updated config import paths in root to use shared
* trigger regression tests
* of course the rebase broke tests
