Merge pull request #1761 from RosettaCommons/rhiju/make_7DA_UNP_not_RAD
making 7DA.params an UNP aa so that it does not get designed
Looks OK -- only rna_design changes, as expected -- no longer allowing 7-deaza-A in standard fixed-backbone RNA design.
A few tests were previously broken (cppcheck; and integration for erraser_minimize & thermal_sampler were broken before -- @everyday847 please checkout).