Replaced the render_to_response shortcut with render everywhere because newer django code tends not to use render_to_response at all. Also updated text where it refered to render_to_response arguments and the use of RequestContext with render.
The old book site had a custom reST builder that would ignore extra leading intendation when the element only contained a list or a table. But in vanilla reST, that markup results in <blockquote><ul>... etc. Rather than port over the hacked-up builder, I just fixed the markup.