ui/color: Added alpha
core/jsonHelpers: Added parseConfigFromString(..)
SceneNode: Added mChildrens field
Forgotten to add sceneManager/sceneNode to CMakeLists.txt
Fixed SceneNode::~SceneNode() - delete childrens
Added SceneManager::nodes() getter
Employed basic scene node's system
Removed obsolete Game's methods (drawUnits, drawUnitModel, etc)
'var++' -> '++var'
Renamed directory: 'ui/' -> 'visualizer/'
visualizer/game.?pp -> visualizer/visualizer.?pp
Removed Event###Visualizer::isUnitVisible(..)
Employed more adequate exception types
parseConfig(..) -> parseJsonFile(..)