In MarsRun, return empty dicts/arrays when file list is empty (e.g. when reading file only from one1 telescope)

Raise exception when L3 stereo event number jumps backwards for more than 100 events (like in MARS).

Solving a bug in MAGIC tels coordinates. Implementing also the rotation from corsika to geographical frame.

Added a shower_reuse value in the MCHeaderContainer. This is set artificially to 1, because num_showers already includes the reuse