Adjust scripts for new/correct prestrain definition

src/Plot-Angle-GammaV2.py

src/Plot-Curvature-GammaV2.py

src/Plot_Angle_Lemma1.4V2.py

src/Plot_Angle_Lemma1.4_ChangeGamma.py

src/Plot_CurvatureLemma1.4_alpha3.0.py

src/Plot_elasticQuantities.py

src/plot_ElasticRatio.py