Reported target spawn time not within trial start/end bounds

[bboudaoud-nv]

When using target previews the spawn_time field reported in the Targets table does not fall within the start_time and end_time reported in the Trials table. This isn't necessarily an issue, but makes it more difficult to affiliate a trial run with its target between the Trials and Targets table.

[bboudaoud-nv]

This is mostly an issue for discussion of future improvement. The current results structure as described can still be used to associate targets to trials by querying for target spawn_time between the start/end time of the previous trial and start/end time of the trial of interest.