Add documentation in owOpenCLSolver.cpp
Add documentation in owPhysicsFluidSimulator.cpp
Add doucumentation to owHelper.cpp file
Add comments in owPhysicFluidSimulatorConst.h and owPhysicsConstant.h not finished with it.
Finish commets in inc/owPhysicConstant.h file delete unused constants, fix simulationScale calculation. Delete strange 0.8 constant from calcDelta() function.
Little fixes
Add comments to opencl file and other files.