Exiting a view makes kernel notify repaint to be sure clearing all highlights in all views

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29309 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3721 fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29310 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e