add plurals for MDDR classes

ippisite/ippidb/models.py

@@ -206,6 +206,7 @@ class MDDRCompoundImport(models.Model):
         # over multiple releases of the MDDR database, the same compound can evolve in its development phase
         # the same compound can have different names and development phases in the same MDDR release
         unique_together = (('mddr_compound_id', 'mddr_name', 'dvpmt_phase'),)
+        verbose_name_plural = "MDDR compound imports"
 
 
 class MDDRCompoundActivityClass(models.Model):
@@ -214,6 +215,7 @@ class MDDRCompoundActivityClass(models.Model):
 
     class Meta:
         unique_together = (('mddr_compound_id', 'activity_class'),)
+        verbose_name_plural = "MDDR compound activity classes"
 
 
 class MDDRSimilarity(models.Model):
@@ -223,6 +225,7 @@ class MDDRSimilarity(models.Model):
 
     class Meta:
         unique_together = (('canonical_smile_ippidb', 'canonical_smile_mddr'),)
+        verbose_name_plural = "MDDR similarities"
 
 """
 class TestActivityDescription(models.Model):