ontohub/ontohub — pull request #450 by 0robustus1 (2013-11-28 12:24:31+00:00)
Title: Correcting420 logic mappings generation

Should solve #420 by removing the generation of `LogicMapping`s in the course of the creation of a `Link`.

This also removes the foreign-key constraint on `user_id` for `LogicMapping`s. Since it is (*intentionally*) possible for them to be `NULL`.