Time series rotate erro check

[cgoulet]

On line 724 of ts_library.py (rotation of time series, creation of rotation matrix).
we should check if angle =270 and not assume that if it's not 90, it's 270.
If it's not 90 or not 270, the process should stop and return an error. This is not a common case, but there are a few datasets with errors in the sensor orientations. This test would check for that.

[Naeemkh]

@fabiolsilva @cgoulet Is this still an open issue? Could you please send me an example of datasets with errors in the sensor orientations.