Prevent reindex Session leak; mark AsyncTask.getHandle() as @Nonnull
Ensure that EntityManagers are closed in tests
Switch LeakListener to slf4j and change logger name
Improve accuracy of time estimates

This should be more accurate when the time to process one progress
unit is only a few milliseconds (or less than one millisecond).
Stop dependency problems from breaking the build
Merge remote branch 'origin/master' into prevent-reindexer-session-leak

Conflicts:
	zanata-war/src/main/java/org/zanata/service/SearchIndexManager.java
Merge pull request #417 from zanata/prevent-reindexer-session-leak

Prevent reindexer session leak