- in header: typedefs for smart pointer usage

# Conflicts:
#	source/Applications/DLR-F16-Solid/f16.cpp
#	source/VirtualFluidsCore/Visitors/SpongeLayerBlockVisitor.cpp
#	source/VirtualFluidsCore/Visitors/SpongeLayerBlockVisitor.h

- completly switch to std::shared_ptr
- introduce IKernel Interface and CalculatorFactory
- extract Vector3D from UbMath
- introduce WriteObjectsCoProcessor

replace BCArray3D& with BCArray3DPtr
DLR-F16: working copy for Pheonix, MPIIORestartCoProcessor has a BUG! MPIIORestart3CoProcessor is reimplementation of MPIIORestartCoProcessor with bug fixing. Buf is fixed in MPIIORestart2CoProcessor.
add new implementations for MPIIORestartCoProcessor: MPIIORestart11CoProcessor and MPIIORestart21CoProcessor, which have separation in dataformat for blocks, data set and bc
Changed BCAlgorithm for object collection in BCProcessor
Fixed issue with GenBlocksGridVisitor

TransBlock to BCBlock
TransNode to BCNode

add acoustic pulse test
add MPIIORestartCoProcessor (n checkpoints to m processes)
add InitDistributionsWithInterpolationGridVisitor
add CompressibleOffsetMomentsInterpolationProcessor (refinement with bulk viscosity)

new mpi benchmark

support for iterative pressure initialisation

add aperm test case
add LineTimeSeriesCoProcessor

key is string now

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