add CONTIG to genbank_hash

uk/ac/sanger/artemis/io/LineGroup.java

@@ -152,6 +152,7 @@ abstract class LineGroup
     genbank_hash.put ("SEGMENT","SEGMENT");
     genbank_hash.put ("PRIMARY","PRIMARY");
     genbank_hash.put ("DBLINK","DBLINK");
+    genbank_hash.put ("CONTIG","CONTIG");
   }
 
   /**