Stimulus creation configurable rest conditions.

[ofgulban]

• [x] Rest conditions can be inserted with arbitrary duration.
• [x] Tested with stimulation script.

[ingo-m]

I tested the stimulus script. It does work with the current configuration (8 rest frames in the beginning; 8 rest frames at the end; rest blocks in between last 3 frames; 550 volumes in total). The analysis should work fine with the current configuration.

[MSchnei]

Nice work. I indented a few extra lines in the code so it would run also for zero null trials. If @ingo-m approves, this should be merged to master.

[ingo-m]

OK I'm fine with merging

[ingo-m]

I will have to test it once more to make sure everything runs smooth for the next experiment.

[ingo-m]

Testing has been done with current configuration (8 rest frames in the beginning; 8 rest frames at the end; rest blocks in between last 3 frames; 550 volumes in total). Should also work for other configurations (but I didn't test that).

[ofgulban]

Looks good!