Update conf.py
Update conf.py

added analytics_domain option for tracking on subdomains
Axure/MathJax-docs,mathjax/MathJax-docs,Axure/MathJax-docs,mitya57/mathjax-docs,mitya57/mathjax-docs,GerHobbelt/MathJax-docs,mathjax/MathJax-docs,GerHobbelt/MathJax-docs