* [ios, macos] Italicize protocols, abstract classes in doc nav
Italicize protocols and abstract classes in the generated documentation’s navigation sidebar.
* [ios, macos] Denote protocols, abstract classes with glosses
Instead of oblique text, use a parenthetical gloss to denote a protocol or abstract class.
- Based on Jazzy's "full width" theme.
- Add ellipsis to overlong items in navigation menu.
- Set minimum width for navigation menu.
- Use Open Sans font face.
- Inline GitHub header icon as SVG.
- Center images by default.
- Add GitHub SVG icon to 'show on github' link.
- Wrap overlong method names on class pages.
