R1:43d3fd9eac6e

Fix exception awarding empty badge to user

Summary:
When awarding a badge to a user without having actually selected a batch to award, do not fail on running a database query with no parameter. Instead, silently fail without an error and reload the page, similar to the behavior of `Add Recipients` on `/badges/recipients/1/` in this case.
Do not throw an Aphront404Response as it would make the `Award Badge` button in the dialog inaccessible and keep the dysfunctional overlay dialog displayed.

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