fix bug and remove redundant initialisation in MultiphaseSetKernelBlockVisitor / remove unused parameter in MultiphaseInitDistributionsBlockVisitor

fix an issue with initialization  of beta and kappa parameters in MultiphaseTwoPhaseFieldsPressureFilterLBMKernel after restarting, need global refactoring kernel parameters

Pressure filter and pressure gradient computed so that boundary conditions can be used. Everything is limited to a single block.

Velocity formulation with filtered pressure and handmade periodic boundary conditions. WORKS ONLY WITH ONE BLOCK! No other boundary conditions.

Velocity fomulation without viscosity correction and no output for pressure and wrong output for velocity

due to the changes in the kernel factory the includes and calls in the numerical test framework are also changed

changed the naming of the missing Classes (Strategies) and added the chimera kernel from the open source code

fix the issue in FullVectorConnector derived classes: add initialization function of base class in derived classes

MultiphaseVelocityBCAlgorithm::applyBC(): vleocity in phase field taken from getBoundaryVelocityX1(). There is still something wrong as the actual velocity in the simulation is much higher than set in the input file!

Bug fix in density correct terms. Multiphase velocity BC has been simplified for this early stage of the development.

simplified the kernel factory infrastructure by omit the enum (Kerneltype) -> adding new kernels to the factory should be straightforward now

Implements surface tension following Hesam's code. Also corrects uninitialized variables in MultiphaseCumulantLBMKernel::findNeighbors . This might have influence on the contact angle. Initialization is now set to zero!

Implements pressure and stress correction for multiphase model with density contrast. Pressure is regularized and hence different from the form used by Safari and Fakahri. Surface tension is not implemented.