Mathjax redraw in slides

[akhmerov]

I have observed that slides generated by nbconvert from current master trigger mathjax redraws on every navigation event:

See
http://nbviewer.ipython.org/format/slides/url/antonakhmerov.org/misc/slides_mathjax_render.ipynb (nbviewer seems to have the same issue)

In case nbviewer code is modified, here's the generated html:
http://antonakhmerov.org/misc/slides_mathjax_render.slides.html

The bug manifests in blinking of $\LaTeX$ when the next fragment is shown.

Resolving #67 could solve also this issue.

[damianavila]

This is because in nbviewer the mathjax redraw is associated to the slidechanged and fragmentchange events. Preoviously, only the slidechanged event triggered the redraw...

I think we probably have to go back and only triggers the redraw with the slidechange as the reveal.js math plugin does...

[takluyver]

Milestoned for 4.1 because it sounds simple and hopefully the fix can get in quickly, but we can bump it if necessary.

[takluyver]

@damianavila can you look into this? I'd like to be able to release 4.1 today or tomorrow.

[damianavila]

I will look into this at the evening if that works for you...

[takluyver]

OK, thanks

[damianavila]

I just submitted a fix @takluyver 😉