Removed redundant JSON package import
Added a new type of metadata for RT ticket numbers
Added a find_study_title method

Corrected a typo in SQL which was hotfixed, but not committed
Gave dcterms:identifier' an exported metadata key
$INFINIUM_SAMPLE_NAME

Refactored publish_analysis_directory to use $INFINIUM_SAMPLE_NAME to
cross-reference samples to the analysis (it's primary metadata) and
to be more efficient in iRODS lookups.
Added replacements for publish_sample_data.pl. These split the
file-finding from the publication step.
Changed log4perl setup to log user activity to daily log files
Updated test for known SNP sets
Upgraded some debug log messages to info level
Added the option to fork processes to update chunks of objects in
parallel