set fallback if locale is set explicitly
Merge pull request #233 from adou600/fallback-fix

Set fallback if locale is set explicitly
cosmetics
cometics
improve exception messages of ParentIdGenerator
fix tests
detect when someone attempts to map the identifier to multiple differnt properties
Merge pull request #239 from doctrine/detect_duplicate_id_mapping

detect when someone attempts to map the identifier to multiple different properties
Merge remote-tracking branch 'origin/master' into jackalope-operations-order-fixed