Avoid fixing an R version in script shebang lines
Added list_groups function
Avoid absolute path for pairwise_concordance_bed external program
Added script to set group access based on study
Removed redundant use statement
Fixed broken export statement
Removed iRODS group test warning because it was firing inappropriately

Removed redundant sprintf
Added dist_author and dist_license
Added Immuno_BeadChip SNP set
Do not tag excluded samples with an analysis UUID
Merge pull request #131 from keithj/devel

Preparation for 0.8.2