interface atualizada para sistema GUI da Unity. Outros fixes he
Merge branch 'master' of https://github.com/ruyoliveira/mathgame

Conflicts:
	Library/CurrentLayout.dwlt
	Library/EditorUserBuildSettings.asset
	Library/InspectorExpandedItems.asset
	Library/ScriptAssemblies/Assembly-CSharp.dll
	Library/ScriptAssemblies/Assembly-CSharp.dll.mdb
	Library/assetDatabase3
	Library/expandedItems
	Library/guidmapper