ENH: ensure to play nicely with require.js

[jorisvandenbossche]

If you need require.js, or there is some other extension that includes require.js (the example case was nbsphinx including require.js, see #25, 32e12de), then that breaks all javascript ("Error: Mismatched anonymous define() module:").

I suppose there are ways to let bootstrap and requirejs (if included) play nicely together.

[choldgraf]

It seems like this blog post:

https://getfishtank.ca/blog/how-to-use-bootstrap-3-with-requirejs

suggests that you can load bootstrap using requirejs. This is maybe a heavy-weight option, but one idea is to either load RequireJS with the theme, or to add an option to do so...

[12rambau]

since 2019 the implementation of bootstrap has quite changed, is it still an issue ?

[12rambau]

solved in #167