1. -Remove render target logic from window manager.
Merge branch 'master' of https://github.com/beyondlwm/BeyondEngine

Conflicts:
	SourceCode/EngineCenter.cpp
	SourceCode/GUI/Window/Control.cpp
	SourceCode/GUI/Window/ScrollView.cpp
	SourceCode/GUI/Window/TopWindow.cpp
	SourceCode/GUI/Window/TopWindow.h
	SourceCode/Render/RenderTarget.cpp