handle parent-child selection when moving to previous child from selected parent
handle parent-child selection when moving to previous child from selected parent

handle parent-child selection when moving to previous child from selected parent in case card.  Add function to get the cae ID of the first child of currently selected parent.
[#158016370]

concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap