remove Sinhala

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36103 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Tooltip-like messages for web (e.g. "save")

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36104 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Help menu update

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36105 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e