Fields with a filter of a relationship breaks filtering in columns

[Noviny]

field: { type: Types.Relationship, ref: 'list2', filters: { list3: ':list3' },

In the above case where a relationship field is being filtered by a second relationship, the column filter breaks, and is unable to retrieve the relationship's items to filter by. It tries to filter by list3, however the database errors as :list3 is not a valid objectId and cannot be parsed.

The :notation is intended for limiting options when viewing a specific object, and should not be applied in the general column case.

PR to follow with one possible solution implementation.