Created new PlayerControl

Created a PlayerControl based on normenhansen's BetterCharacterControl
available in the nightly build. I used the source code for that and the
AbstractPhysicsControl, and the result works in the stable build as
well. Walks and jumps sluggishly.
Adds a utility class converting ints to Roman numerals.
RomanNumber: Changed package name from counter to util.
Created new PlayerControl

Created a PlayerControl based on normenhansen's BetterCharacterControl
available in the nightly build. I used the source code for that and the
AbstractPhysicsControl, and the result works in the stable build as
well. Walks and jumps sluggishly.
Merge branch 'PlayerControl' of https://github.com/forssenm/kandidat-projekt into PlayerControl
Cleaned up PlayerControl

Removed some unnecessary code in PlayerControl to make it more easy to
read.
Player class, simplifying PlayerControl

This adds the Player class, a Node subclass that combines the player
model and a PlayerController. This commit also simplifies PlayerControl
by making it more specialised - a jump is now always an upwards force
instead of a general vector.
Quick, high jumps

Solved the problem of jumps being either too short or too high.
PlayerControl increases the gravity of the player, which is compensated
by a high jumpForce.
Small fixes to Player and PlayerControl

Rotated the player model to face forward. Moved the player model to the
right height above the ground. Cleaned up some comments in
PlayerControl, and renamed JumpForce as JumpSpeed (since it's an
initial speed that is set, not a force that acts).
Added a check in playerControl.update() for if jump has succeeded
Set a lower numeric tolerance for when the player is on ground closes #2
Cleaned up debug code