Merge branch 'fix-python-scripts' into 'master'

...ooling/ConstantCosmoTempEvolution/plot_thermal_history.py

examples/Cooling/CoolingBox/plotEnergy.py

examples/Cooling/CoolingRedshiftDependence/plotSolution.py

examples/Cooling/FeedbackEvent_3D/plotSolution.py

examples/Cosmology/ComovingSodShock_1D/plotSolution.py

examples/Cosmology/ComovingSodShock_2D/plotSolution.py

examples/Cosmology/ComovingSodShock_3D/plotSolution.py

examples/Cosmology/ConstantCosmoVolume/plotSolution.py

examples/Cosmology/ZeldovichPancake_3D/plotSolution.py

examples/HydroTests/BlobTest_3D/makeMovie.py

examples/HydroTests/Diffusion_1D/plotSolution.py

examples/HydroTests/EvrardCollapse_3D/plotSolution.py

examples/HydroTests/Gradients/plot.py

examples/HydroTests/GreshoVortex_2D/plotSolution.py

examples/HydroTests/GreshoVortex_3D/plotSolution.py

examples/HydroTests/InteractingBlastWaves_1D/plotSolution.py

examples/HydroTests/KelvinHelmholtz_2D/plotSolution.py

examples/HydroTests/Noh_1D/plotSolution.py

examples/HydroTests/Noh_2D/plotSolution.py

examples/HydroTests/Noh_3D/plotSolution.py