TMF-4405: Fix bug with DocTypePicker facets
TMF-4405: Fix bug with DocTypePicker facets

They were not 'remembering' selected values when switching between
modes.

Now, KendoComboBox can take functions for their displayField and
valueField props, which should continue to do the right thing by kendo,
thanks to AHG's recent work in this area.

(http://jira/browse/TMF-4405)

tshelburne/wingspan-forms,wingspan/wingspan-forms,0111001101111010/wingspan-forms