Business layer functionality added to retrieve parts of a sectioned Information List

Business layer functionality has been added to retrieve parts of a sectioned Information List.

A sectioned information list uses the pipe character to build a hierarchy, e.g.:
Ford|Laser
Ford|Falcon
Nissan|Bluebird|GTX
Nissan|Bluebird|GTi
Nissan|Sunny

These types of list are used on the Security Statement Item form to define Make, Model, Sub-Model groups.

A new business layer function has been added:
ISInformationListRO.GetSectionedItemList(ByVal prefix As String) As ISList

This will return the contents of a list given a specified prefix.

A prefix of "" returns: Ford,Nissan
A prefix of "Ford" returns: Laser,Falcon
A prefix of "Nissan|Bluebird" returns: GTX,GTi