- remove the default "display: none" style on the SVG fallback
- remove the IE CSS hacks from ext.math.css
- add a client-side implementation of the PNG fallback
Bug: 71912
Change-Id: I91b11313aae25c4d05f8f2333d2f21537c9b8887
When MathPlayer is installed, we show the MathML instead of the SVG fallback.
This will in particular allow the sync highlighting feature of MathPlayer.
This also introduces a module ext.math.js that could be used to do some
Javascript postprocessing.
Bug: 71748
Change-Id: I438a20032c312d12321ca4c5686bcfd107656b37