correcting some problems in reading local waveform files

 - now also works with 3 components spread over more than one file
 - correcting the check for GSE2 files
 - also works with --nometadata option now
make MultiCursor work with matplotlib >= 1.3
include magnitude in info string after location
modify info string of prev commit
fix previous commit
fetching events from neries and checking for possible arrivals with
taup. plotting vertical lines at possible arrivals.
neries event fetching: print error messages
try to fix GSE2 specific calibration/sensitivity
new option to switch off neries/taup arrival time calculations
Merge branch 'master' into quakeml_b

Conflicts:
	obspyck.py
	util.py