moved libavg related utils out into utils_avg.py
Kivy.py: inlined some variables
NaubJoint.endpoints added for convinience
Naub.py: moved code around
Kivy.py: map Naubino coordinates correctly, use bounding box to set Ellipse size
Kivy.py: removed superfluous naubino.size = size, cause bind(size, ...) will do just fine
Naubino.py, Kivy.py: hid pointer geraffle behind Naubino.touch_down method and a Naubino.Touch object
Config.py: spammer_interval = 3
Naubino: spammer spams on Naubino.play()
physics rebalance
* no SlideJoint as NaubJoint anymore, just DampedSpring...
* Naubs mass is now 10g and a NaubJoint is a soft nylon string