#2489 improving warnings for vertex cell removal

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@21807 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2489 fixing crypt test

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@21809 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2546 Jiggle bottom cells!

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@21810 b5f69653-2bf5-0310-8201-b0dafb8e1405