Adds the new values for #54. Also adds a test script

Test script is not very sophisticated but should provide a basic
test to see that the changes we are expecting to see are in the
code base
Puts the upgrade-tests in their own branch for ease of development
Removes policy significance test - that is not an embedded list
Merge branch 'upgrade-tests' of github.com:IATI/IATI-Codelists into upgrade-tests