Revisiting visit/sessions/runs

[jan-petr]

Description

Correctly use the sessions/runs in BIDS terminology.

1. Rename visit/session tokens in sourceStructure.json to sessions/runs
   • And make sure this is backwards compatible.
   • And write this correctly in the documentation
2. Correctly use sessions/runs in BIDS
   • using also the correct subdirectories
   • and make sure that this works for structural as well
   • all function names, variable, comments should correctly reflect BIDS terminology
3. Adapt BIDS2Legacy accordingly
   • including file structure
   • including variable and function names
4. Adapt ExploreASL code
   • use variable and function names session and runs correctly in the code and output and comments, while keeping the internal structure untouched.
5. Avoid double sub and ses prefix. Adding sub- as prefix is fine as long as we check if this is not double (in case this prefix sub- was already in the DICOM folder). Same for ses-

Requirements

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How to test

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Release notes

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