AP Sensing Device ID fix and more AP sensing data

[davechris]

first commit: The AP Sensing Device ID is N4386B instead of C320. C320 was an arbitrary name given for the wellbore by the user.

second commit: Added additional AP Sensing test files (both .tra and .xml) because AP sensing does not save it's meta data into the .xml file. Thus I recommend to use both exports when measuring with AP Sensing devices.

1. POSC export -> .xml file -> contains stokes and anti-stokes data, but does not contain metadata and additional sensors e.g. PT100 connected to device
2. tra export -> .tra file (basically a .csv using semicolon as separator) -> does not contain stokes and anti-stokes, but contains metadata an additional sensor data

PS: I think this can be checked and merged with the current project. I also added an algorithm to apsensing.py which also reads the .tra data. It comes in the next pull request.