show pointer offset notes in the requirements view

[gdeOo]

I'm trying to use the pointer offset feature in code notes that allows to toolkit to display notes on AddAddress chains.

I usually develop everything in rascript and only create code notes at the end. During this process, I use RATools' achievement view to see which addresses are still missing notes. The view didn't support offset notes for pointers though, so it was breaking my workflow :)

RATools was already parsing offset notes, so this PR is just displaying that information on the requirements view. The idea is to keep track of a parent code note as we go through the requirements. AddAddress sets the parent note and chained conditions resolve their code notes using the parent note's offset notes.