Slightly more descriptive names for Celera xrefs

misc-scripts/external_db/external_dbs.txt

 210	Anopheles_symbol	1	KNOWN	1	0	50	Anopheles symbol
 300	BRIGGSAE_HYBRID	1	KNOWNXREF	1	0	5	Briggsae Hybrid
 400	Celera_Gene	1	PRED	1	0	5	Celera gene
-410	Celera_Pep	1	PRED	1	0	5	Celera pep
-420	Celera_Trans	1	PRED	1	0	5	Celera trans
+410	Celera_Pep	1	PRED	1	0	5	Celera peptide
+420	Celera_Trans	1	PRED	1	0	5	Celera transcript
 600	DROS_ORTH	1	ORTH	1	0	5	DROS ORTH
 700	EMBL	1	KNOWNXREF	1	0	5	EMBL
 701	EMBL_predicted	1	PRED	1	0	4	Predicted EMBL