Adding dictyBase (id=20303) for Ensembl Genomes (from Uma).

misc-scripts/external_db/external_dbs.txt

@@ -254,6 +254,7 @@
 20208	EFUNGI_TRANSCRIPT	1	KNOWNXREF	\N	\N	\N	e!Fungi	PRIMARY_DB_SYNONYM	\N	\N	\N
 20301	RNAMMER	1	KNOWNXREF	1	\N	\N	RNAmmer	MISC	\N	\N	\N
 20302	TRNASCAN_SE	1	KNOWNXREF	1	\N	\N	tRNAScan-SE	MISC	\N	\N	\N
+20303	dictyBase	1	KNOWNXREF	1	\N	\N	dictyBase	PRIMARY_DB_SYNONYM	\N	\N	\N
 
 # Ensembl Plants/Gramene external dbs
 50000	BGI_EST_Cluster	1	XREF	1	0	0	EST Cluster (BGI Indica)	MISC	\N	\N