If slider creation is forbidden, interpret "s i n x" as "sin(x)", needed for MATHML input 

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37411 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
SMART related improvements

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37412 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Close  menu on view change

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37413 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
allow <mfenced open="|" close="|"> for MATHML input

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37414 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e