Fix problem with rcg.load() and add_contact()

...pts/tu_delft_wing_design/CMDOWS/FPG_unconverged-MDA-J.xml

...ts/tu_delft_wing_design/CMDOWS/FPG_unconverged-OPT-GS.xml

...pts/tu_delft_wing_design/CMDOWS/FPG_unconverged-OPT-J.xml

examples/scripts/tu_delft_wing_design/CMDOWS/MDAO_IDF.xml

examples/scripts/tu_delft_wing_design/CMDOWS/MDAO_MDF-GS.xml

examples/scripts/tu_delft_wing_design/CMDOWS/MDAO_MDF-J.xml

...pts/tu_delft_wing_design/CMDOWS/MDAO_converged-DOE-GS.xml

...ipts/tu_delft_wing_design/CMDOWS/MDAO_converged-DOE-J.xml

...pts/tu_delft_wing_design/CMDOWS/MDAO_converged-MDA-GS.xml

...ipts/tu_delft_wing_design/CMDOWS/MDAO_converged-MDA-J.xml

...s/tu_delft_wing_design/CMDOWS/MDAO_unconverged-DOE-GS.xml

...ts/tu_delft_wing_design/CMDOWS/MDAO_unconverged-DOE-J.xml

...s/tu_delft_wing_design/CMDOWS/MDAO_unconverged-MDA-GS.xml

...ts/tu_delft_wing_design/CMDOWS/MDAO_unconverged-MDA-J.xml

...s/tu_delft_wing_design/CMDOWS/MDAO_unconverged-OPT-GS.xml

...ts/tu_delft_wing_design/CMDOWS/MDAO_unconverged-OPT-J.xml

...cripts/tu_delft_wing_design/CMDOWS/RCG.xml.REMOVED.git-id

examples/scripts/tu_delft_wing_design/KDMS/FPG_IDF.kdms

examples/scripts/tu_delft_wing_design/KDMS/FPG_MDF-GS.kdms

examples/scripts/tu_delft_wing_design/KDMS/FPG_MDF-J.kdms