Fix for #4674

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37058 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
close InputBarHelp if there are clicks outside of the InputBarHelpPopup or AlgebraInputW.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37059 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
avoid exception

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37060 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e