[Meta] RTL / BiDi support

[pkra]

• [mml3.js] collection of failed MML test suite tests #1025: bugs in the experimental mml3.js extension
• UI issues
  • Put the loading box on the right side for RTL languages #628: menu location)
  • locales: how to mix RTL with LTR #601: mixing RTL and LTR in the UI
• Complex text layout, in particular with TeX input [was: MathJax does not support Complex text layout.] #474: Complex Layout (e.g., Unicode characters)
• RTL support #610: RTL support in MathML
  • hacks for TeX input: RTL support #610 (comment)
  • [mml3js] Root is drawn improperly and appearing as two strokes of a rectangle when using RTL direction mml  #1308: support mirrored roots

[pouriaMaleki]

I have written dirty code to run after Mathjax rendered in commonHTML that removes space between Arabic / Persian characters inside \text command, maybe useful for now:

var texts = document.querySelectorAll(".mjx-mtext");
for (var i = 0; i < texts.length; i++)
    if (textContainArabic(texts[i].innerText)) 
           texts[i].innerHTML = texts[i].innerText;