Removed DIRC txt files
Removed Eventdisplay
added histogram axis labels

added histogram axis labels and added constants for time stamp histogram
boundaries
added user reference channel

added user TDC reference channel option, so that all time stamps are
computed with respect to this TDC channel time stamp
updated README

added missing calibration type explanation to README (spotted by Michael
Traxler)
added fine time bin widths graph

Added a fine time bin width graph to the output of the calibration
(suggested by Cahit).
Merge branch 'master' into a2

Conflicts:
	TTrbAnalysis.cpp