removed native 'x' from text-input-panels for IE

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37325 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Resizing for tablets.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37326 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
clean; comments; order of fields and methods

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37327 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e