UCHIC/ODM2 — pull request #32 by aufdenkampe (2014-03-05 15:18:42+00:00)
Title: Merge SourceInfo feature branch into Master

These are all very straight forward additions that *I think* were well discussed and agreed on. I've implemented these changes identically to what we fleshed out last week and shown here:
http://uchic.github.io/ODM2/schemas/ODM2_Feb26_MeetingBranch/diagrams/ODM2SamplingFeatures.html
http://uchic.github.io/ODM2/schemas/ODM2_Feb26_MeetingBranch/diagrams/ODM2ExternalIdentifers.html

The Citations table is a placeholder for a near-future revision to implement Citations (or Attributions) in a manner similar to IEDA's draft "data_source" and "author_list" tables in "PetDBSchema-Redesign-26.png". This will require a bit of discussion and we'll do this later this week when we tackle the Provenance schema.