Show the blocks list on review UIs and the diff viewer.
Show the blocks list on review UIs and the diff viewer.

The new 'blocks' variable wasn't provided on review UI pages or on the
diff viewer. Now, make_review_request_context will provide it if the
caller does not.

chipx86/reviewboard,chipx86/reviewboard,1tush/reviewboard,bkochendorfer/reviewboard,custode/reviewboard,chipx86/reviewboard,beol/reviewboard,beol/reviewboard,reviewboard/reviewboard,1tush/reviewboard,brennie/reviewboard,KnowNo/reviewboard,1tush/reviewboard,sgallagher/reviewboard,brennie/reviewboard,davidt/reviewboard,custode/reviewboard,brennie/reviewboard,beol/reviewboard,bkochendorfer/reviewboard,1tush/reviewboard,sgallagher/reviewboard,davidt/reviewboard,1tush/reviewboard,1tush/reviewboard,1tush/reviewboard,KnowNo/reviewboard,brennie/reviewboard,reviewboard/reviewboard,chipx86/reviewboard,sgallagher/reviewboard,reviewboard/reviewboard,KnowNo/reviewboard,1tush/reviewboard,bkochendorfer/reviewboard,KnowNo/reviewboard,bkochendorfer/reviewboard,1tush/reviewboard,davidt/reviewboard,sgallagher/reviewboard,reviewboard/reviewboard,custode/reviewboard,beol/reviewboard,custode/reviewboard,davidt/reviewboard