* docs: Add more details on "getting-started -> javascript" page & group jQuery stuff
* Update after feedback
* Rewrite some content
- Shorten copy here and there
- Reduce some callouts that are entire sections with h2 headings
- Re-arrange a couple things
Co-authored-by: Mark Otto <markdotto@gmail.com>
Co-authored-by: Mark Otto <markd.otto@gmail.com>