-> (W.I.P) Editor GUI - Unstable :
--> Button Trigger index value (int) in editor window replaced by the String chowing up on the button. 
---> When the button is trigger the name of the trigered button is returned.
---> (W.I.P) Getting the file list of all saved map. DialogPopup improvement, single button can be added.
-> (W.I.P) Editor GUI - Unstable :
--> Button Trigger index value (int) in editor window replaced by the String chowing up on the button. 
-->> When the button is trigger the name of the trigered button is returned.
-->> DialogPopup improvement, single button can be added. (They will be show on the added order)
--> (DONE) Getting the file list of all saved map.
--> (Add) abstract MapEditorSystem who contain the save and load method for AreaEditor && WorldEditor System.
--> (Add) Dialog listener && Dialog popup to show the result to the user.