JS: modify cycle time logic to allow for a time series with a non-zero first time
JS: modify cycle time logic to allow for a time series with a non-zero first time

Signed-off-by: Harry King <409587b9e6671aa0763646191d292852dc49a658@gmail.com>

jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim