#2573 fixed

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22209 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2543 - fix visualization of cell location indices

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22210 b5f69653-2bf5-0310-8201-b0dafb8e1405