doxygen edits
Merge pull request #689 from dcoeurjo/doxygenEdits

doxygen edits
fix cmake warning
Merge pull request #693 from elcerdo/fixCmakeWarning

fix cmake warning
relax constraint on input image
documentation
Merge pull request #694 from elcerdo/fixConstImageAdapterConceptCheck

Fix const image adapter concept check
build examples option and prettier cmake messages
build examples option and prettier cmake messages
Merge pull request #695 from dcoeurjo/cmakeMinorEdits

Cmake minor edits
Ajout de la lecture DICOM
Corrections in DIcomReader
Test file + required corrections
Comment ITK include files
Comment about ITK include files and compilation option
Dicom reader corrections + ITK optionnal module dependencies removed + prepare testDicomReader to process on a DICOM file
Add dicom serie image + delete dedicated functor + delete dicom MetaDataDictionary
Add HounsfieldToGrayscaleFunctor in DicomReader.h
Modification of functor and consequences
Generalization of HounsfieldToGrayscale functor into RescalingFunctor and consequences with DicomReader