Rewrote save functions for a more convenient use

pyKADMOS/sample/graph.py

pyKADMOS/sample/interface.py

...ngdirectory/scriptedWorkflowsSellar/sellarProblem2_IDF.wf

...irectory/scriptedWorkflowsSellar/sellarProblem2_MDF-GS.wf

...directory/scriptedWorkflowsSellar/sellarProblem2_MDF-J.wf

...criptedWorkflowsSellar/sellarProblem2_converged-DOE-GS.wf

...scriptedWorkflowsSellar/sellarProblem2_converged-DOE-J.wf

...criptedWorkflowsSellar/sellarProblem2_converged-MDA-GS.wf

...scriptedWorkflowsSellar/sellarProblem2_converged-MDA-J.wf

...iptedWorkflowsSellar/sellarProblem2_unconverged-DOE-GS.wf

...riptedWorkflowsSellar/sellarProblem2_unconverged-DOE-J.wf

...iptedWorkflowsSellar/sellarProblem2_unconverged-MDA-GS.wf

...riptedWorkflowsSellar/sellarProblem2_unconverged-MDA-J.wf

pyKADMOS/scripts/WP6_TUDWingDesign_work.py

pyKADMOS/scripts/WP6_TUD_WingDesign_CMDOWS/FPG_IDF.xml

pyKADMOS/scripts/WP6_TUD_WingDesign_CMDOWS/FPG_MDF-GS.xml

pyKADMOS/scripts/WP6_TUD_WingDesign_CMDOWS/FPG_MDF-J.xml

...cripts/WP6_TUD_WingDesign_CMDOWS/FPG_converged-DOE-GS.xml

...scripts/WP6_TUD_WingDesign_CMDOWS/FPG_converged-DOE-J.xml

...cripts/WP6_TUD_WingDesign_CMDOWS/FPG_converged-MDA-GS.xml