Retrieving answers #7
Description
Currently the retrieving is using an NSPredicate that lets the query search for QAPost with type "answer" and "question" pointer pointing to a specific question. This is highly inefficient.
Answers will be saved as an array in QAPost questions. However, dealing with the array of PFObject is simply "retrieving" instead of "querying", which means the code from Rendezvous cannot be reused.