Provided generic cell type for interpolation based FMMs (does not support compression yet); Improved M2L application for uniform kernel.

Hybrid Algorithm modified, and Parallel Details paper updated, with some tips for using EZTrace on ScalFMM

Some more cleanup in MatrixKernel class (renaming DIM to NCMP, to avoid confusion in other applications) as well as in Chebyshev/Uniform Tensorial tests.

Conflicts:
	Src/Kernels/Uniform/FUnifTensorialM2LHandler.hpp

Redesigned direct DFT and FFT classes (provided a separate complex valued FFT and templatized direct DFT with physical value type); Provided test for C-interfaced Lapack functions such as Cholesky Decomposition (TODO add SVD and QRD).