Fix broken links and site nav glitch, misc cleanup

[TimHess]

• Moves the last font file reference to the fonts css file
• Remove broken links, unused Blazor components and pages, unused nuget package

Fixes #140

[bart-vmware]

Please see comment.

[TimHess]

In testing the combination of this PR with SteeltoeOSS/Documentation#310, I found the following:
3. Menu entry Projects > Steeltoe Dynamic Logging has disappeared from both sites. When I asked to sync them up, I meant to fix the title/link to be consistent between both sides; not remove the entry altogether.
4. MainSite > Projects > Steeltoe Network File Sharing: throws exception when clicked

• Note the link from Documentation is named differently ("Steeltoe Network File Shares") and points to a different URL
• Same issue for the link in footer

5. Documentation: Make the browser window smaller, so the top-level menu changes into a hamburger menu. Then clicking the hamburger menu shortly expands its entries before auto-collapsing again. It's currently impossible to keep it visible. It works properly on MainSite.
6. MainSite: when the site loads, two errors appear in the console:

7. Documentation: navigate to /api/v3/stream/, the following errors show in the console:

8. Documentation > Get started > API Browser: left-side version-selector panel with namespaces does not appear

3. added back
4. changed links to point to docs site, also added route handling to page that handles redirects for any old/missed link
5. still working on this
6. I believe those are from an ad blocker in your browser
7. resolved
8. haven't started but will look to make changes that easily merge with this commit

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[bart-vmware]

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