implemented "easy" xml elements to new XmlHandler classes Save method
naming bugfix
added all data elements to XmlHandler besides PublicProperties
added PublicProperties element to XMLHandler Save
added savenew and loadnew method that use xmlserializer
tested saving and loading - but still some bugs and issues!!
changed currentteamindex to property and bugfixes
added LoadGame and SaveGame windows and their functionalities
gamewindow: view games in viewbox