Only MPICommunicator and DistributedGrid is implemented.

Allow existance of non setup synchronizer object. MeshFunction creates grid synchronizer automagicli with binding.
(only if distr grid was chnged)

Implementation of TimeIndependentPDESolver.

There is shor test of this stuff for 1D 2D and 3D.

Relpaced tabs with 4spaces.

- used variadic templates to avoid code bloat
- added execHost static method to avoid nvcc warnings

- separate data types for input arrays of binary operations
  (necessary for the equality comparison of two arrays of different
  type)
- added separate template parameter for ResultType, which defaults to
  the RealType
  (the goal is to allow sum of bool vectors into int instead of bool)

Improve of DistributedGrid: Distributed grid teak overlap size as parameter.

- Add Template abstraction to MPIIsend and MPIIRecv
- Distributed Grid Synchronizer is now indipendend on DOF datatype (bound to basic C types, types known by MPI)
- Distributed Grid Synchronizer now uses WaitAll function.

Test 3Ddistribuovaného gridu. Chybí test sousedů, je limitován na 27 procesorů, netestuje 1D či 2D distribuci nodů.

Lihgt refactorization of 1D and 2D distributedGridSynchronizer. Now hav same interface as 3D distributedGridSynchronizer and function Synchronize is lighter.

Working implementation of 3D distributed grid, but 3D traversars do not know about distributed grid, Process{Boundary/Interrior}Entities do not work correctly with distributed gird.

Partial implementation of 3D distributed grid. není funkční, potřebuju rychledostat rozpracovanou práci ze servrovny, kde nejde klima.