* Adds initial version of the documentation style guide
* Adds a note about adding new pages
* Instructs users about where to edit the `nav:` for the section
* Adds acronym rule clarification
- Nav bar text is now 20% higher opacity, hover state also differentiated with weight
- In-body links are now underlined
- Lightened BG colour and darkened link colour — now achieves an APCA score of 84!
- Renames "Dev" to "Develop" for improved navigation labels
- Deployment docs are now located under a larger "Development" section (fewer nav bar choices & realistically I think anyone who wants to do one is going to be referring to the other)
- Adds links to tools the first time they're mentioned
- Rewords part of the homepage
- Hides section navigation on the homepage (now we don't have a blank section nav bar!
- Adds some syntax highlighting
- Removes some manual word wrapping — this was done very rarely / inconsistently
