revert AlgebraInput css bug fix for SMART

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33073 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Small improvements for open screen

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33074 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4080: make sure "f (x)=..." is recognized as "f(x)=..."

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@33075 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e