Nav and Redirect

[halotroop2288]

I'm gonna fix #38, #39 and #40 in this PR.

I have done what I said I was gonna do:

• MkDocs navigation has been implemented
• Images and articles have moved to subfolders matching their category
• Redundant category pages have been deleted
• Redundant redirect pages have been deleted

This PR still needs some cleanup. Links may be broken. (but there are none reported by the compiler.)

Before merge:

• Fix merge conflict
• Move the rest of the pages to their folders
• Make sure every page has been added to the MkDocs nav
• Use /** absolute links instead of ../** relative links
• Remove redundant "Xbox-360-" from category folder names
  (This site is all about the 360! It's implied!)

Merge

Please squash this PR.

Post-merge:

• Index pages should be created for each category, like this:

  mkdocs.yml

  nav:
    - Category:
      - 'category/index.yml'

• !TODO and !Pages That Need Updates should be deleted and posted as an issue here on GitHub.

• Index should be rewritten. There's probably not a lot of need for most of the current content, but all of the links will be broken!

[halotroop2288]

@tuxuser If you would like to review, you can start viewing file changes now. I'm finishing up my changes. I need to find a way to fix all the dead links (they're not being warned by the compiler)

[halotroop2288]

RFC: Should "Category:" links at the bottom of every page that were added as a remnant of Mediawiki be kept?

Removing them instead of fixing them would save me a lot of work.

[halotroop2288]

As far as this PR goes, I think I've reached the limit of my usefulness. I don't know enough to categorize all of the remaining pages.

[tuxuser]

Pages needing updates:

• SFCX: Xbox Flash Controller, integrated into the Southbridge. Probably, if there are any links to SFCX right now, they should rather point to https://github.com/Free60Project/wiki/blob/master/docs/NAND.md#flash-controllers
• XCP: Here's a good resource: https://gitlab.com/0x8081/libxcp

[halotroop2288]

Thanks, tuxuser! I'll put that to good use for my KSY files!

[halotroop2288]

I am not sure how much of these tasks I completed, but this could use a real review.

I'd like to add more onto this wiki, from findings while working on Xenia. Such as kernel min version 1861 which has yet to be found.