corrected change in r7528 to make interfaces suited for compositional adaptive modelling:

reconstruction is now seperated into a pure reconstruction step to gain a new solution and a storage step where the new solution is stored into the cellData. This small interface change (method arguments/names) has to be included in the 2padaptive model.

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@7638 2fb0f335-1f38-0410-981e-8018bf24f1b0