Add MapGroupLayer to gdx.gwt.xml
Add MapGroupLayer to gdx.gwt.xml

alex-dorokhov/libgdx,MovingBlocks/libgdx,Zomby2D/libgdx,stinsonga/libgdx,cypherdare/libgdx,stinsonga/libgdx,FredGithub/libgdx,sarkanyi/libgdx,tommyettinger/libgdx,Zomby2D/libgdx,ttencate/libgdx,MikkelTAndersen/libgdx,FredGithub/libgdx,cypherdare/libgdx,sarkanyi/libgdx,josephknight/libgdx,sarkanyi/libgdx,MikkelTAndersen/libgdx,MovingBlocks/libgdx,alex-dorokhov/libgdx,tommyettinger/libgdx,libgdx/libgdx,FredGithub/libgdx,MikkelTAndersen/libgdx,MovingBlocks/libgdx,josephknight/libgdx,alex-dorokhov/libgdx,cypherdare/libgdx,cypherdare/libgdx,sarkanyi/libgdx,ttencate/libgdx,NathanSweet/libgdx,tommyettinger/libgdx,FredGithub/libgdx,Zomby2D/libgdx,bladecoder/libgdx,ttencate/libgdx,ttencate/libgdx,alex-dorokhov/libgdx,MovingBlocks/libgdx,MikkelTAndersen/libgdx,FredGithub/libgdx,stinsonga/libgdx,FredGithub/libgdx,libgdx/libgdx,libgdx/libgdx,bladecoder/libgdx,MikkelTAndersen/libgdx,ttencate/libgdx,NathanSweet/libgdx,josephknight/libgdx,MovingBlocks/libgdx,MovingBlocks/libgdx,alex-dorokhov/libgdx,stinsonga/libgdx,MikkelTAndersen/libgdx,alex-dorokhov/libgdx,NathanSweet/libgdx,MovingBlocks/libgdx,cypherdare/libgdx,sarkanyi/libgdx,sarkanyi/libgdx,MikkelTAndersen/libgdx,sarkanyi/libgdx,Zomby2D/libgdx,bladecoder/libgdx,FredGithub/libgdx,MovingBlocks/libgdx,tommyettinger/libgdx,josephknight/libgdx,ttencate/libgdx,tommyettinger/libgdx,bladecoder/libgdx,alex-dorokhov/libgdx,Zomby2D/libgdx,josephknight/libgdx,josephknight/libgdx,josephknight/libgdx,NathanSweet/libgdx,alex-dorokhov/libgdx,libgdx/libgdx,libgdx/libgdx,bladecoder/libgdx,MikkelTAndersen/libgdx,sarkanyi/libgdx,NathanSweet/libgdx,stinsonga/libgdx,ttencate/libgdx,josephknight/libgdx,ttencate/libgdx,FredGithub/libgdx