specify database annotation targets
Improve logging
sync() -> syncUninterruptibly() to prevent InterruptedException
Revert "sync() -> syncUninterruptibly() to prevent InterruptedException"

This reverts commit 1ddbdb2bf02c43be03a1548aad9d25fd7c8f1086.
Improve logging again, commit was lost with revert
Merge pull request #1 from atomicint/master

improve logging + specify database annotation targets