E-Diode working, problem was missing solvation + Solvation for DLKap bcs. of verification with Fuhrmann included

E-Diode not working, concentrations seem to be uncouupled, fixed 1/Lambda2 in Var.Form and found out, that Lambda2 and a2 also determine maximum of the concentrations at Neumann Cond

restructured examples to store the results in *.npz files and extra visualizations to avoid costly simulations, if not wanted