BarComponent

- Added - new Component BarComponent. This one is filling bar with
specific stat that can be set inside xml. It can be positioned inside
any other SwingPanels.
- Added - method to determine which data will be returned by parameter
DataValue.
- Changed - Game is not painted over gamepane context. Now it can be set
via xml. Just add to the tag background-image value GAME.
- Added - Other helping method inside UiResource, GameMenu, etc.
- Changed - DataUtils method to add components into container is now
refactored and shrinked in size.