Increase GPS position timeout to real-life timeouts. More work needed.

This increases the timeouts to a more reasonable scale. We need to invest some more thought (in a separate PR) into this, because dropping out of auto only makes sense if we've still got a RC control.

Need to start logging the commander state more completely.
Would it not be more correct to split eph_epv_threshold into eph_threshold and epv_threshold? There is always a larger vertical error anyway and do we not use baro, or a strong mix thereof, to do height estimation?