Move standard references to TSV-backed package data and remove DB models#62

Ulthran wants to merge 2 commits intomasterPennChopMicrobiomeProgram/SampleRegistry:masterfrom

codex/improve-handling-of-host-species-and-sample-typesPennChopMicrobiomeProgram/SampleRegistry:codex/improve-handling-of-host-species-and-sample-typesCopy head branch name to clipboard