starting to fix up some of the text in the PMR section getting ready for HARMONY 2013 tutorial
tweaking the config slightly to make sure book is distinct for the PMR tutorial at HARMONY 2013
trying to find a last_updated format that works with readthedocs
cleaning up some of the documentation: need to link directly to the Beeler Reuter workspace since it is not always the first search result; trying to not make output format/theme specific comments.
Merge branch 'master' into cellml-tutorial