Move coderdojo-logo.png to assets folder, update reference

Author: avivace

camera.py

@@ -47,7 +47,7 @@
 class Camera(object):
 
     _instance = None
-    _img_template = image.Image.load("coderdojo-logo.png")
+    _img_template = image.Image.load("static/media/coderdojo-logo.png")
     stream_port = 8080
 
     @classmethod