issue #170 scale backing image for IDPrimary display
issue #644 sent query for relationship types / updates for relationship types through the interaction_request mechanism for SQLite + tests of (MySQL, SQLite) x (headless, workers) x (fetch relationship types, find missing type, add missing type) = 12 cases
Merge branch 'multiprocessing' of github.com:CellProfiler/CellProfiler into multiprocessing