* Remove angular styleguide
* Remove SASS reference only file
It's still linked in the STYLEGUIDE.md document
* Cleanup HTML styleguide
* More cleanup
* Cleanup API style guide
* Remove architecture style guide
* Merge into STYLEGUIDE.md
* add attribution back on
* Change doclink to style guide
* Change wording and remove more rules
* Update STYLEGUIDE.md
Fix typos
Co-Authored-By: Stacey Gammon <gammon@elastic.co>