#1360 Document some suppressed warnings.

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@19153 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2393 - fix bugs in vertex element centroid, moment and short axis calculations

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@19154 b5f69653-2bf5-0310-8201-b0dafb8e1405
(#940 related)  Move `NodesOnlyMesh` so that `chaste_libs=1` works on all compiler sets

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@19155 b5f69653-2bf5-0310-8201-b0dafb8e1405