Change to kernel constructor prototype for Chebyshev and Uniform. Changes propagated to all Test and UTest files (I hope)

Chebyshev and Uniform kernels can be used now with distributed algorithm. 2 test files have been added to use these kernels with FmmAlgorithmThreadProc

Add Chebychev comparaison. Results are also bad git add Tests/Kernels/testSphericalEwalAlgorithm.cpp.

Implemented UniformGrid/Lagrange interpolation and factorized interpolation specific elements such as the MatrixKernel, Tensor and Mapping classes + Added required tests.

Doc updated, I added a Main Example section, which contains what was in the mediawiki under Example Section