Reorganize locales keys

* Remove deprecated / unused keys
* Change Lorem ipsum with real text
* Group related keys together
Extract widgets to top level
Typo and formatting cleanup for widgets
Style Swiftype
I18n swiftype partial
Change swiftype to erb
Reorder Easy in docs.yml
Merge OAuth section with Authentication
Add DocumentHelper
Move deprecated? helper to DocumentHelper
Add featured and icons keys in docs.yml
Dynamically generate featured in front page
Dynamically generate index in docs page
Change authentication section to authorization
Remove APIv3 troubleshooting page

Include the only question in the FAQ.
Style fixes
Responsive tables
Add settings and assets for scrooge
Proofread APIv3 documentation
Update requests.yml

* Display rendered params to distinguish requests
* Add different examples of embed address
* Fix missing brackets in category_skus_with_applied_filters