SARPol documentation improvement and template simplification

...Polarimetry/otbMuellerToCircularPolarisationImageFilter.h

...metry/otbMuellerToPolarisationDegreeAndPowerImageFilter.h

...Polarimetry/otbMuellerToReciprocalCovarianceImageFilter.h

...RPolarimetry/otbReciprocalCoherencyToMuellerImageFilter.h

...try/otbReciprocalCovarianceToCoherencyDegreeImageFilter.h

...otbReciprocalCovarianceToReciprocalCoherencyImageFilter.h

Code/SARPolarimetry/otbReciprocalHAlphaImageFilter.h

...nearCovarianceToReciprocalCircularCovarianceImageFilter.h

Code/SARPolarimetry/otbSinclairImageFilter.h

Code/SARPolarimetry/otbSinclairReciprocalImageFilter.h

Testing/Code/SARPolarimetry/CMakeLists.txt

...larimetry/otbMuellerToReciprocalCovarianceImageFilter.cxx

...imetry/otbMuellerToReciprocalCovarianceImageFilterNew.cxx

Testing/Code/SARPolarimetry/otbSARPolarimetryTests2.cxx