* Add reading_time to articles api responses
Fixes#13436
* Update api docs to match changes to the articles response
* Follow up docs updates
- increment api docs version
- add reading_time to articles/me responses
- add reading time to the show response example format
* Change reading_time attribute to reading_time_minutes
Update the article builder to use `article.reading_time` and present
it as `"reading_time_minutes"`.
Update the api spec to expect the new property name instead of the attribute.
* Update api documentation to reflect the new name
- Change reading_time -> reading_time_minutes.
- I decided to keep the (possibly redundant) description text here.
* Rename positive_reactions_count to public_reactions_count
* Add positive reactions count back in so we can remove it
* Use public_category method for reactions
* Add positive_reactions_count in case any old caches rely on it
* Add positive_rxn_count to account for API endpoints
* Remove unused method
* One more spot...
* Add method back in because of caches
* Update specs to match new functionality
* Fix typo
* Remove unused methods
