before only one channel side could have a velocity boundary condition (bc). When setting a bc at a second side, the first bc was overwritten.
Velocity bcs were fied in the previous commit (bda2c544271657adfabb63e9ae974e77692566a6). This commit fixes the boundaryQs for velocity.

before only one channel side could have a velocity boundary condition (bc). When setting a bc at a second side, the first bc was overwritten.

use new version of LBCalcMacCompSP27 again (reverts changes in bd2123ce)

Remove loop for forcing in allocAndCopyForcing() in GridProvider and  move initParamter() in Simulation.cpp

move some lines around