#31 Boxes actions and minor glitches

...cz/nic/tablexia/game/games/shooting_range/Properties.java

...tablexia/game/games/shooting_range/ShootingRangeGame.java

...tablexia/game/games/shooting_range/actions/HitAction.java

...nic/tablexia/game/games/shooting_range/actors/Effect.java

.../nic/tablexia/game/games/shooting_range/actors/Scene.java

.../nic/tablexia/game/games/shooting_range/actors/Smoke.java

...c/tablexia/game/games/shooting_range/model/GameState.java

...exia/game/games/shooting_range/tools/TargetGenerator.java

.../games/shooting_range/tools/TargetPositionController.java

...cz/nic/tablexia/screen/createuser/form/SignaturePane.java