Make Sage output MathJax3 compatible htmls

[kwankyu]

MathJax2 converts TeX and LaTeX math delimiter pairs such as $, $$, (, ), [,] to script tag <script type="math/tex">...</script>, and then renders the scripts.

MathJax3 directly renders maths in the math delimiters.

Currently Sage renders maths in LaTeX to html with script tags, which are recognized only by MathJax2.

To pave the way for transiting Sage to MathJax3, we make Sage output MathJax3 compatible htmls.

With this patch, Sage works both with MathJax2 and MathJax3.

(this patch also contains a small fix for tables)

CC: @egourgoulhon

Component: misc

Author: Kwankyu Lee

Branch/Commit: 3d26006

Reviewer: Markus Wageringel

Issue created by migration from https://trac.sagemath.org/ticket/31517

[kwankyu]

Branch: u/klee/31517

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

27820ca

Sage output MathJax3 compatible htmls

[sagetrac-git]

Commit: 27820ca

[kwankyu]

Author: Kwankyu Lee

[mkoeppe]

comment:6

Sage development has entered the release candidate phase for 9.3. Setting a new milestone for this ticket based on a cursory review of ticket status, priority, and last modification date.

[sagetrac-git]

Changed commit from 27820ca to 3d26006

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

3d26006

Sage output MathJax3 compatible htmls

[mwageringel]

comment:9

This looks good to me.

[mwageringel]

Reviewer: Markus Wageringel

[vbraun]

Changed branch from u/klee/31517 to 3d26006