JSHint
passed.
PEP8 Style Checker
internal error.
Pyflakes
passed.
Fix an error with search bots indexing things.
Review Request #8870 — Created April 3, 2017 and submitted
Somehow Yandex is indexing through into one of the diff-comments fragment
views, and in the process triggering a bug where we were assuming that a query
parameter was passed in. This change bullet-proofs things a little bit.
Ran unit tests.
