Added ability to make irods groups

Added methods to find objects and collections by their metadata
Added iRODS group creation to publishing script

Added genotyping project title to sample metadata

Added --force option to pipeline setup for a special case where mixed chips are really desirable in an analysis
Replaced --force argument with --chip_design argument
Merge remote branch 'wtsi-npg/devel' into devel
Merge pull request #88 from keithj/devel

iRODS groups and chip design selection