Fix resources docsify pages

[whoabuddy]

Based on observations clicking around the new docsify site and those listed in stacksgov/pm#90.

[whoabuddy]

There is a little more that I could do to clean up the notes, but the main goal of this PR was to get all of the links working again, and to provide basic navigation so that if I click from the main readme into a folder, then I have a clear path back without having to use the back button.

There were also some basic things, like adding titles and some copy updates to try and make things more evergreen and consistent.

@lrettig note that the relative links should be working in this format now based on the setting we updated in the last PR, there was one that we missed and I was able to test, so I followed that format to keep everything as simple as possible.

[whoabuddy]

Oh, and another major update was in two docsify settings:

1. for links to external files, using the syntax:

[Presentation Slides](20200213_community_call_001.pdf ':ignore')

This tells docsify to not try and render the file per the documentation here, and should resolve the 404s for those as well.

2. for pages that land in the center of the page instead of at the top, added the config line:

auto2top: true

This tells docsify to automatically scroll to the top when loading a new link, which can be overridden by using a specific ?id=xyz on the end of the URL.

If all of this looks good I can do a similar sweep across the stacksgov/pm repo.

[lrettig]

Ran docsify locally, clicked around, everything looked good except the relative links in the survey folder README - for some reason, docsify gets confused by relative links in subfolders. I made these into absolute links and everything now LGTM

[joberding]

Took a look. Do you need any help @whoabuddy