MODE-2298 Updated the sequencers to only log warnings if an exception is raised and the repository has been shut down and also to use JDK 7 try-with-resources style.
MODE-2298 Updated the text extractors to better handle the case when the repository is shut down.
Merge pull request #1295 from hchiorean/MODE-2298

MODE-2298 Updated sequencers and text extractors to better handle the case when a repository has been shut down and there's still work being processed