Add collection to solr index
WIP on collections into solr
Fix namespaces for adding collections
Don't fail if collections API is not specified
Fix collections API queue
Remove debugging statement
Add exception traces to messages on dead letter queue
Set source in command file
Route messages to the correct part of the enrich pipeline

Add conditional behavior for the enrich pipeline based on the source
of the item (aleph, via, oasis, etc.)
Merge pull request #24 from harvard-library/2014-11-07-collections

Enhance MODS records based on Collections API