added command to make copies of a bag, fixes #94
added dictionary for bag types, refs #94
Added feature to add items and bags under a collection from a csv/Excel file input. Fixes #96
Merge pull request #102 from gwu-libraries/t94-copies-of-existing-bags

T94 copies of existing bags
resolved confilcts
Merge branch 'master' into t99_bag_type_bug
changes to bag type mappings in fabric script. Fixes #99