Documentation updates

git-svn-id: svn://svn.code.sf.net/p/picard/code/trunk@1358 8bce386e-0d6e-43e0-b1ca-608082c0432d
Clean up documentation

git-svn-id: svn://svn.code.sf.net/p/picard/code/trunk@1359 8bce386e-0d6e-43e0-b1ca-608082c0432d
Clean up documentation

git-svn-id: svn://svn.code.sf.net/p/picard/code/trunk@1360 8bce386e-0d6e-43e0-b1ca-608082c0432d
Release 1.86

git-svn-id: svn://svn.code.sf.net/p/picard/code/trunk@1361 8bce386e-0d6e-43e0-b1ca-608082c0432d
Merge branch 'svntrack' (version 1.86)