fixed blank tooltip problem in web spreadsheet

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24535 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
bugfix: #3186 incorrect bar width in ProbCalculator
[needs backport] 

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24536 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
bugfix: #3186 exported incorrect bar width in ProbCalculator
[needs backport] 

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24537 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e