refs #8527. Tims new IDF.
Revert "refs #8527. Tims new IDF."

This reverts commit 38364ecb504fb4a52b671f8a723098f3816671b0.
Revert "Revert "refs #8527. Tims new IDF.""

This reverts commit 018a923515a556c04a00f5c54545684d95deff64.
refs #8527. Fix tests and change date range.
Merge remote-tracking branch 'origin/feature/8527_POLREF_idf_update'