Javadoc added to view package

Made changes in: GamePanel, Window
javadoc player, gamecontroller
Projectile, Weapon

added projectile and updated weapon + javadoc
World can now add projectiles to the world.

Made changes in: World, ViewPanel
Merge remote-tracking branch 'origin/WorldBranch'
Merge branch 'master' of https://github.com/Calleberg/Operation_5A