Feature/improve beavers joseph
This MR extends the interface for setting the BJ(S) condition such that a full velocity vector for the porous medium velocity (in case of not applying the Saffman simplification) can be assigned (which is important for 3d problems).
Furthermore, the corresponding funtions have been renamed for increased clarity:
isBJS()
--> isBeaversJoseph()
setBJS()
--> setBeaversJoseph()
TODO
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Change and deprecate boundary condition isBJS
toisBeaversJoseph
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Adapt changelog -
Fix all occurrences of isBJS
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Testing
Edited by Kilian Weishaupt