PLUGINS-242: Forced the PVs dropdown widget to search for selected value either in local list or DB.
PLUGINS-242: Forced the PVs dropdown widget to search for selected value either in local list or DB.

When a PV attribute has more than 100 values, the selected value is not displayed if it is
an automatic selection and not in list of first 100 values. Fixed the PV widget to lookup
the selected value either in local list or in DB when the selection is either manual or
automatic (via copy)

krishagni/openspecimen,krishagni/openspecimen,krishagni/openspecimen