Julien Danjou 0c51a0a686 storage: store recording timestamp
This patch adds a record_at field in the sample that are stored that
indicates when the timestamp has been stored in the database.

Change-Id: Ia0ff8bd07fd811fe8d3050d30971a05a277798d0
Blueprint: storage-sample-timestamp
2014-02-21 12:46:19 +01:00
..
2013-11-13 15:32:31 +01:00