SS1: Support arbitrary sublist names.

[paulclarkaranz]

Adds support for using record sublists other than item and addressbook. This shouldn't require any changes in dependant pieces of code unless they were relying on matching an error message or on selectNewLineItem erroring on unsupported records (it also "upserts" in the SS2 module).

Most places that would have previously complained about unsupported lines will now complain about TypeError: Cannot * property '*' of undefined. Exceptions are:

• selectNewLineItem: will create new sublist groups and new currentLine groups as appropriate in line with what selectNewLine does in the SS2 module. (I'm not sure what that addressbookaddress thing is for but left it in for compatibility.)
• getLineItemCount it was already returning 0 for unknown sublists so I left it that way

I have left lineItems and addressBookLines as aliases in case they are being used in existing tests somehow (I don't think that is possible given the scope though). lineItems is still used in transform(), I am not sure if that should be updated and if so what to.

Edit: also fixed bug in the SS1 search API.