Move timeMultiplier application to opticalSystem methods #436
Description
Is your feature request related to a problem? Please describe.
Currently, the timeMultiplier in the observing mode is applied only in SurveySimulation methods, and not in the OpticalSystem methods for computing integration time. This can lead to confusion and inconsistent results (especially with the various dMag/completeness quantities computed in the TargetList prototype).
Describe the solution you'd like
Add timeMultiplier scaling to calc_intTime and calc_dMag_per_intTime. Remove from all SurveySimulation implementations.