Revert "render pages with mathjax in IE9 compatability mode"
Revert "render pages with mathjax in IE9 compatability mode"

This reverts commit c57226f67d0816d2ead080af7b3cff3daa0921d4.

JanMarvin/rstudio,nvoron23/rstudio,nvoron23/rstudio,sfloresm/rstudio,pssguy/rstudio,piersharding/rstudio,suribes/rstudio,tbarrongh/rstudio,githubfun/rstudio,brsimioni/rstudio,thklaus/rstudio,githubfun/rstudio,vbelakov/rstudio,more1/rstudio,jar1karp/rstudio,jar1karp/rstudio,tbarrongh/rstudio,piersharding/rstudio,suribes/rstudio,sfloresm/rstudio,githubfun/rstudio,pssguy/rstudio,vbelakov/rstudio,john-r-mcpherson/rstudio,githubfun/rstudio,nvoron23/rstudio,nvoron23/rstudio,githubfun/rstudio,jar1karp/rstudio,piersharding/rstudio,brsimioni/rstudio,sfloresm/rstudio,edrogers/rstudio,jrnold/rstudio,thklaus/rstudio,suribes/rstudio,jrnold/rstudio,piersharding/rstudio,thklaus/rstudio,vbelakov/rstudio,more1/rstudio,piersharding/rstudio,maligulzar/Rstudio-instrumented,vbelakov/rstudio,piersharding/rstudio,jrnold/rstudio,JanMarvin/rstudio,maligulzar/Rstudio-instrumented,edrogers/rstudio,jzhu8803/rstudio,piersharding/rstudio,brsimioni/rstudio,suribes/rstudio,tbarrongh/rstudio,more1/rstudio,pssguy/rstudio,githubfun/rstudio,JanMarvin/rstudio,jrnold/rstudio,jzhu8803/rstudio,brsimioni/rstudio,nvoron23/rstudio,edrogers/rstudio,githubfun/rstudio,suribes/rstudio,suribes/rstudio,jzhu8803/rstudio,thklaus/rstudio,more1/rstudio,pssguy/rstudio,pssguy/rstudio,pssguy/rstudio,john-r-mcpherson/rstudio,jar1karp/rstudio,more1/rstudio,more1/rstudio,tbarrongh/rstudio,thklaus/rstudio,JanMarvin/rstudio,brsimioni/rstudio,JanMarvin/rstudio,thklaus/rstudio,maligulzar/Rstudio-instrumented,JanMarvin/rstudio,jrnold/rstudio,john-r-mcpherson/rstudio,jar1karp/rstudio,tbarrongh/rstudio,JanMarvin/rstudio,john-r-mcpherson/rstudio,jar1karp/rstudio,piersharding/rstudio,maligulzar/Rstudio-instrumented,thklaus/rstudio,maligulzar/Rstudio-instrumented,edrogers/rstudio,jzhu8803/rstudio,githubfun/rstudio,edrogers/rstudio,suribes/rstudio,tbarrongh/rstudio,sfloresm/rstudio,maligulzar/Rstudio-instrumented,jrnold/rstudio,sfloresm/rstudio,brsimioni/rstudio,john-r-mcpherson/rstudio,piersharding/rstudio,pssguy/rstudio,nvoron23/rstudio,jrnold/rstudio,sfloresm/rstudio,john-r-mcpherson/rstudio,more1/rstudio,maligulzar/Rstudio-instrumented,jzhu8803/rstudio,jar1karp/rstudio,pssguy/rstudio,brsimioni/rstudio,vbelakov/rstudio,jrnold/rstudio,john-r-mcpherson/rstudio,edrogers/rstudio,nvoron23/rstudio,tbarrongh/rstudio,edrogers/rstudio,vbelakov/rstudio,vbelakov/rstudio,more1/rstudio,jzhu8803/rstudio,sfloresm/rstudio,jar1karp/rstudio,maligulzar/Rstudio-instrumented,thklaus/rstudio,JanMarvin/rstudio,john-r-mcpherson/rstudio,jrnold/rstudio,JanMarvin/rstudio,maligulzar/Rstudio-instrumented,brsimioni/rstudio,tbarrongh/rstudio,jzhu8803/rstudio,vbelakov/rstudio,suribes/rstudio,edrogers/rstudio,jar1karp/rstudio,sfloresm/rstudio,jzhu8803/rstudio