Some fixes to docs to build with the latest sphinx.
Some fixes to docs to build with the latest sphinx.

davidt/reviewboard,Khan/reviewboard,reviewboard/reviewboard,Khan/reviewboard,beol/reviewboard,custode/reviewboard,brennie/reviewboard,chipx86/reviewboard,KnowNo/reviewboard,chazy/reviewboard,Khan/reviewboard,KnowNo/reviewboard,1tush/reviewboard,Khan/reviewboard,bkochendorfer/reviewboard,KnowNo/reviewboard,Khan/reviewboard,Khan/reviewboard,custode/reviewboard,1tush/reviewboard,sgallagher/reviewboard,1tush/reviewboard,sgallagher/reviewboard,bkochendorfer/reviewboard,1tush/reviewboard,chazy/reviewboard,bkochendorfer/reviewboard,atagar/ReviewBoard,atagar/ReviewBoard,chazy/reviewboard,beol/reviewboard,1tush/reviewboard,reviewboard/reviewboard,atagar/ReviewBoard,davidt/reviewboard,davidt/reviewboard,reviewboard/reviewboard,custode/reviewboard,brennie/reviewboard,atagar/ReviewBoard,Khan/reviewboard,Khan/reviewboard,bkochendorfer/reviewboard,chazy/reviewboard,1tush/reviewboard,atagar/ReviewBoard,atagar/ReviewBoard,sgallagher/reviewboard,chipx86/reviewboard,chipx86/reviewboard,1tush/reviewboard,reviewboard/reviewboard,Khan/reviewboard,custode/reviewboard,1tush/reviewboard,chipx86/reviewboard,sgallagher/reviewboard,atagar/ReviewBoard,atagar/ReviewBoard,beol/reviewboard,davidt/reviewboard,KnowNo/reviewboard,chazy/reviewboard,brennie/reviewboard,brennie/reviewboard,atagar/ReviewBoard,chazy/reviewboard,1tush/reviewboard,beol/reviewboard,chazy/reviewboard,chazy/reviewboard,chazy/reviewboard