Filter mapped operations from choice of values

[Matthias Schoettle]

Based on the Association concern, if partial operations are mapped to concrete operations, and in ArrayList the ArrayList class (mapped from Collection) is called, all operations, including the mapped ones (from extended aspects) are shown. Instead, only the mapped to operations should be shown (besides unmapped operations).

[Matthias Schoettle]

Resolves #375: Adds filtering of mapped operations, i.e., only the mapped to operations are kept.

→ <<cset 209d2870dbc4>>