Update documentation for new modules : Imaging/Radiomics, Radiotherapy

[juguerin]

For the new modules, here is the list of the documentation to update:

• updating DataElementConcept.tsv
• updating ConceptualDomain.tsv
• updating CSV pivot files
• updating data integration guidelines
• updating Wiki/SVG
• updating CSV validators
• updating high-level documentation

[VincentLeTexier]

The documentation is up-to-date on the MED-OSIRIS branch. @ylaizet will look at the Wiki/SVG

[INCaAJobard]

Draft processing...