Check CSV output uses 2.01 codelists correctly

[Bjwebb]

This might be a problem:

CONSTRAINT ck_organisation_role CHECK (role IN ('Extending', 'Accountable', 'Funding', 'Implementing'))

[Bjwebb]

The problem of the database constraint should be fixed by https://github.com/IATI/iati-datastore/commit/fe5c0e5940d51b959f83510becf9ad2b80cb37ae

However, there is still the problem that the CSV output uses the 1.0x codelists to output code names.

[Bjwebb]

Remaining tasks:

• [x] Ensure that the correct major_version number is picked up for transactions etc. in addition to activities