remove render group LAYER_2D_FONT and LAYER_GUI_FONT, then render font order by the node's sequence( add font to group LAYER_2D or LAYER_GUI )
1.Building select ui finish
2.add root2d and root3d to scene
Merge branch 'master' of https://github.com/beyondlwm/FCEngine

Conflicts:
	Resource/MainHUD.bcf
	SourceCode/GUI/Font/FontManager.cpp
	bin/EngineLaunch.eds
After review