Fix for #3921

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30816 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Typo in last #3000 fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30817 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3882 Probablity calculator images added.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30818 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #3886: fixing the bug for most cases

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30819 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e