RivuletExpDataProcessing changelog 07.03.2013

RivuletExpDataProcessing.m
- added new menu item to the Other functions menu -> Treshold influence
  study

rivuletProcessing.m
- modified the statusbar handling - now, the rivuletProcessing input is
  also the handle to figure, where to change the statusbar. it had to be
  done because of the calling this function from other place, than the
  main window
- added calculation of the local Reynolds numbers, based on the local
  liquid mean speed and on local rivulet width or the capillary length
  (used length scale for the macroscopic rivulets, see for example
  Diez, Gonzales, Gondic, On the breakup of fluid rivulets, Phys. of
  fluids 21, 2009)

postProcPlotting.m
- added possibility to zoom out one of the profiles - clickable icon in
  the bottom right corner
- this also requested upload of a folder with needed icons (however, it
  is currently only one picture)

treshInflStudy.m (newly added)
- program for study of the influence of treshold on the results
- now, it is possible to find optimal treshold for each calculation
- optimal value of treshold would be the one, where the decrease of the
  size of interfacial area becomes approximately linear or where the
  rivulet widths becomes close one to each other
- however, the default value , 3e-5 m, seems to be somehow optimal and
  universal