Added interface for world objects.

Made changes in: WorldObject
Javadoc added to view package

Made changes in: GamePanel, Window
Merge remote-tracking branch 'origin/ViewBranch'
javadoc player, gamecontroller
Projectile, Weapon

added projectile and updated weapon + javadoc
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Merge remote-tracking branch 'origin/WorldBranch'
Merge branch 'master' of https://github.com/Calleberg/Operation_5A
playerShoot gameController Input
Merge remote-tracking branch 'origin/WorldBranch'
Merge branch 'master' of https://github.com/Calleberg/Operation_5A
Iteminterface Worldobject

set/get image