__str__ for datasaets should include accession number as well as titl…

…e. Makes selecting them as foreign keys easier

open_fmri/apps/dataset/models.py

@@ -88,7 +88,7 @@ class Dataset(models.Model):
     contact = models.ForeignKey('Contact', blank=True, null=True)
 
     def __str__(self):
-        return self.project_name
+        return self.accession_number + ": " + self.project_name
 
     def save(self, *args, **kwargs):
         notify = False