Extend PlotTDPs to plot TDiffs of TDPs.
Added const-versions of ReplaceAll and ToCppValid which return the cleaned
string
No need to include TDetectorPulse.h
Provide option to enable / disable plotting histograms for cuts on fast or slow
channel
First version of the PlotIntegral module
Add preprocess and postprocess methods to the base module so that we always
change into the directory of the module for the before and after proces entry
methods.  This means that histograms will be saved in the correct place without
any extra thought.
Merge branch 'feature/BK_plot_integral_and_TDP_times' into develop