RivuletExpDataProcessing changelog 18.02.2013

RivuletExpDataProcessing.m
- when the data storage directory is chosen, the program now creates one
  more folder: Others, to store the data about local rivulet surface
  area densities and the epsHR calculated for each cut

rivuletProcessing.m
- the calculated variable epsHR was added, it is the ratio between the
  rivulets local maximal height and width. lubritacion theory assumes
  epsHR to be << 1

postProcPlotting.m
- possibility to display epsHR was added to the program