Tried to fix client prediction

Changes to server reconcilation. Now theres an action-queue which gets
executed after the server has corrected the position. The clients
position is now always the same on the server and client. It's still
jittery, however.
Client prediction cont.

Still not fixed. Smooth movement now, but always a small difference
between server and client pos. Seems to grow if you start/stop alot
while moving. Undeterministic movement code? Stupid floats