Issue #1973026 by Amitaibu: Fixed 'hide' callback for OG fields.
Issue #1958800 follow-up by Amitaibu: Fixed OG validation.
Issue #1958800 by Amitaibu, jastraat: Module cleanup and better integration with OG's 'create' permissions.
Fix entityreference_prepopulate_get_values_from_cache.
Fix disable,
Fix typo.
Fix values.
fix wsod.
Fix caching.
Fix wsod.