ENSCORESW-565: added test on translation before adding a direct xref

transcript_direct_xref is added if exon overlap between ensembl transcript and refseq transcript scores high
but translation_direct_xref is only added if ensembl translation and refseq translations match
if they don't match, do not add direct xref, this gap will hopefully be filled up by the exonerate alignments

misc-scripts/xref_mapping/XrefParser/RefSeqCoordinateParser.pm

@@ -264,15 +264,18 @@ sub run_script {
           my $t = $ta->fetch_by_stable_id($best_id);
           my $tl = $t->translation();
           if (defined $tl && defined $tl_of) {
-            ($acc, $version) = split(/\./, $tl_of->stable_id());
-            my $tl_xref_id = $self->add_xref({ acc => $acc,
-                                            version => $version,
-                                            label => $tl_of->stable_id(),
-                                            desc => '',
-                                            source_id => $peptide_source_id,
-                                            species_id => $species_id,
-                                            info_type => 'DIRECT' });
-            $self->add_direct_xref($tl_xref_id, $tl->stable_id(), "Translation", "");
+            if ($tl_of->seq eq $tl->seq) {
+print "Both translation sequences match\n" ;
+              ($acc, $version) = split(/\./, $tl_of->stable_id());
+              my $tl_xref_id = $self->add_xref({ acc => $acc,
+                                              version => $version,
+                                              label => $acc,
+                                              desc => '',
+                                              source_id => $peptide_source_id,
+                                              species_id => $species_id,
+                                              info_type => 'DIRECT' });
+              $self->add_direct_xref($tl_xref_id, $tl->stable_id(), "Translation", "");
+            }
           }
         }
       }