fixed non-parallel build and inserted extrapolation
added EdgeTraversal
fixed extrapolation of ghostlayers for regular grids
fixed extrapolation for adaptive grid
fixed extrapolation for adaptive grid
Merge remote-tracking branch 'unterweg/master'

Conflicts:
	src/peanoclaw/runners/PeanoClawLibraryRunner.cpp
test setup
added support for different SWE solvers
added support for different SWE solvers
Merge branch 'master' of github.com:unterweg/peanoclaw

Conflicts:
	src/peanoclaw/native/SWEKernel.h
fixed remote ghostlayer overlap in 3D and ghostlayer extrapolation
Merge remote-tracking branch 'unterweg/master'