Converted observation inserts to batch mode.
Merge commit 'a8aeb1124105e9db57168625337642183b08a060' into bump_db_schema

Conflicts:
	src/main/scala/com/sweetspotdiabetes/models/DeviceUploadPersist.scala
	src/test/scala/com/sweetspotdiabetes/models/DeviceUploadPersistSpec.scala
Fixed merge issues, and renamed ObservationRowVO