Fix histogram names and adapt default ranges for commissioning in TrackPV2HalfMonitor
This MR removes the white spaces at the end of histogram names, which seem to prevent the histograms from showing up in Monet when running the online monitoring.
The default range of "Left-Right PV delta" plots has been adapted.
@mstahl and @rmatev: could you help me check if this indeed fixes the problem to see histograms in Monet? I attached a screenshot showing the histograms that aren't working. The paths seem to be correct, so I'm assuming this is the problem.
Edit: the removal of the white spaces at the end of the histogram names seems to indeed have resolved this problem: 
Edited by Marian Stahl