Movement logic for player moved to Player class

*Removed player logic from app.js and moved it to player class
Moved more player logic into Player class

*Player keybinding logic move to Player class
*Player directions logic moved to Player class
Show current score and current position in highscore
Merge pull request #30 from MrMagnus/make-player-class

Movement logic for player moved to Player class
Html page fixed to more troll alike