[svn] * Adding JS fill in next QM number via ajax.

* Slight models cleanup- get rid of TroggleImageModel class, use mixin instead.
* Collect various troggle shared functions into utils.py

core/models_survex.py

@@ -31,7 +31,10 @@ class SurvexBlock(models.Model):
         ordering = ('date', 'survexpath')
 
     def __unicode__(self):
-        return unicode(self.name)
+        if self.name:
+            return unicode(self.name)
+        else:
+            return 'no name'
     
     def filecontents(self):
         f = os.path.join(settings.SURVEX_DATA, self.begin_file)