make it compatible with python 3.4

manage.py

@@ -7,17 +7,17 @@ manager = Manager(app)
 @manager.command
 def initdb():
   db.create_all()
-  print 'All tables created'
+  print("All tables created")
 
 @manager.command
 def dropdb():
   if prompt_bool("Are you sure you want to lose all your data"):
     db.drop_all()
-    print 'All tables dropped'
+    print("All tables dropped")
 
 @manager.command
 def seed():
-  print 'Adding sample data %s' % db.engine.url
+  print("Adding sample data")
   designer = Designer(name="Martin", path='/martin')
   db.session.add(designer)
   db.session.commit()