Fixed bug with data_finish. Now the finish date of a task needs to be…

… greater than the start date.

taiga/projects/milestones/models.py

@@ -73,7 +73,7 @@ def __repr__(self):
 
     def clean(self):
         # Don't allow draft entries to have a pub_date.
-        if self.estimated_start and self.estimated_finish and self.estimated_start > self.estimated_finish:
+        if self.estimated_start and self.estimated_finish and self.estimated_start >= self.estimated_finish:
             raise ValidationError(_('The estimated start must be previous to the estimated finish.'))
 
     def save(self, *args, **kwargs):