Course re-run section and refs to it in others

@explorerleslie, @talbs please check for accuracy and completeness
@WatsonEmily please circulate to PMs for level of detail, other likely questions to address, format
@mhoeber , @srpearce please consider this a developmental/copy edit
@sarina, @nasthagiri if you have time I value your input also!

and isn't it incredibly annoying? 
The default Sphinx template that we use in readthedocs deliberately does not wrap lines within tables (or html-style width/height sizing of images), and doesn't support any way of doing it manually. http://rest-sphinx-memo.readthedocs.org/en/latest/ReST.html#tables
I care a LOT, and it bothers me that tables aren't a useful way to present information to our readers.
We do have a story in our backlog to customize the template, but it hasn't happened yet (mostly because we haven't figured out how to change it to do what we want).
Sorry for the rant, you pushed a button!