Allow submitting / downloading messages with '.'

Finishes the fix from the previous commit.  That let you view a
message with a period in the id, this lets you do something with it.

Change-Id: I5c924cee46474bdf9131fd3cb8307554d9174bdf
Merge branch 'master' into deployment

479996a Allow submitting / downloading messages with '.'

Change-Id: I803c7f144aef879aeba17d12419b98924d459850