[Calypso] Handle resources with slashes in the name

[Guido Günther]

On Tue, Jan 26, 2016 at 10:13:04AM +0100, Petter Reinholdtsen wrote:
> 
> diff --git a/tests/data/from-tripsync.ics b/tests/data/from-tripsync.ics

Nitpick: I would rather name the ics files like the test cases in the
future. I went ahead an pushed this. Thanks.
 -- Guido