Fix MathJax rendering on iOS Safari

[JeffreyCA]

The issue is described here with the recommended fix here.

So the problem was that iOS Safari automatically converts certain long integers into phone numbers as hyperlinks which breaks MathJax. The recommended workaround solution is to add the following HTML meta tag to every page:

<meta name="format-detection" content="telephone=no">

Which I did by overriding the default material theme and added the tag above.

Now if you go here on iOS Safari it renders correctly.

[JeffreyCA]

Secondly, I added the site/ directory to .gitignore because every file shows up as changed in Git every time I make a change and build it. Also it's good practice to leave generated files out 😃.

[walkccc]

This is awesome! Thank you very much!