Don't force ST_MakeValid threatment on user import
Don't force ST_MakeValid threatment on user import

It's too expensive to do on import, and how to fix is a subjective
matter. CDB_TransformToWebmercator will still run it but only to
avoid exceptions from clipping to valid webmercator bounds.

Related tickets: #672, #730.

jmwenda/nationmaps,datapolitan/cartodb20,datapolitan/cartodb20,datapolitan/cartodb20,jmwenda/nationmaps,jmwenda/nationmaps,jmwenda/nationmaps,datapolitan/cartodb20