(Inspired by) Issue 3250: Controls for display of comments in unified diff view, by Raghu.  This is mostly a copying of some of the navigation HTML from the diff pages.  I took the liberty of also using the {%url%} tag in places where previously it wasn't working -- apparently Django got fixed.
(Inspired by) Issue 3250: Controls for display of comments in unified
diff view, by Raghu.  This is mostly a copying of some of the navigation
HTML from the diff pages.  I took the liberty of also using the {%url%}
tag in places where previously it wasn't working -- apparently Django
got fixed.


git-svn-id: 095a516e186c72f46b708383d0d3f28c2432e8a1@281 e30e9e8f-1b4c-0410-881d-6f13584adfe0

termie/rietveld-mirror,imirkin/rietveld,termie/rietveld-mirror,imirkin/rietveld