Avoid calling complete() on an abort()ed context.
Merge branch 'dryad-master' into trello-44-logging
Update log4j.properties to not roll-over

Using FileAppender instead of DailyRollingFileAppender.  logrotate will
be configured externally to rotate logfiles on servers
Updated history in comments.
Removed COCOON_FILE.  This logfile was added to track down submission
system timeout issue.
Remove trailing whitespace
Merge pull request #475 from datadryad/trello-44-logging

Logging Cleanup