check for synonym consistency #474
Description
The request is that synonyms and antonyms should be automatically checked so that if entry A has B listed as a synonym/antonym, that the same relationship holds from B to A.
(I'm not sure that this should be true. Sometimes words have multiple meanings and one meaning of A could have a synonym in B, while B isn't exactly a synonym for A. Will have to look at the database and see how often this happens. Maybe in such cases the annotation shouldn't be synonym.)