Allow to open multiple projects when some are not imported or without main scene.
Allow to open multiple projects when some are not imported or without main scene.

vkbsb/godot,DmitriySalnikov/godot,MarianoGnu/godot,Shockblast/godot,akien-mga/godot,BastiaanOlij/godot,josempans/godot,honix/godot,MarianoGnu/godot,BastiaanOlij/godot,ZuBsPaCe/godot,Valentactive/godot,vnen/godot,DmitriySalnikov/godot,Shockblast/godot,vkbsb/godot,BastiaanOlij/godot,ZuBsPaCe/godot,vkbsb/godot,akien-mga/godot,vnen/godot,MarianoGnu/godot,Faless/godot,Zylann/godot,akien-mga/godot,Zylann/godot,sanikoyes/godot,vnen/godot,godotengine/godot,DmitriySalnikov/godot,firefly2442/godot,ZuBsPaCe/godot,pkowal1982/godot,akien-mga/godot,honix/godot,vnen/godot,pkowal1982/godot,MarianoGnu/godot,honix/godot,guilhermefelipecgs/godot,vkbsb/godot,honix/godot,MarianoGnu/godot,vnen/godot,josempans/godot,Valentactive/godot,akien-mga/godot,BastiaanOlij/godot,BastiaanOlij/godot,Valentactive/godot,ZuBsPaCe/godot,vnen/godot,BastiaanOlij/godot,ZuBsPaCe/godot,MarianoGnu/godot,guilhermefelipecgs/godot,josempans/godot,guilhermefelipecgs/godot,BastiaanOlij/godot,Shockblast/godot,pkowal1982/godot,Zylann/godot,Shockblast/godot,MarianoGnu/godot,Shockblast/godot,ZuBsPaCe/godot,godotengine/godot,Valentactive/godot,godotengine/godot,vkbsb/godot,MarianoGnu/godot,Zylann/godot,josempans/godot,firefly2442/godot,godotengine/godot,guilhermefelipecgs/godot,guilhermefelipecgs/godot,guilhermefelipecgs/godot,honix/godot,Zylann/godot,DmitriySalnikov/godot,pkowal1982/godot,josempans/godot,DmitriySalnikov/godot,Faless/godot,godotengine/godot,ZuBsPaCe/godot,Faless/godot,Zylann/godot,josempans/godot,Shockblast/godot,ZuBsPaCe/godot,Faless/godot,Valentactive/godot,Faless/godot,sanikoyes/godot,Faless/godot,pkowal1982/godot,josempans/godot,Zylann/godot,pkowal1982/godot,vkbsb/godot,sanikoyes/godot,sanikoyes/godot,firefly2442/godot,Faless/godot,sanikoyes/godot,pkowal1982/godot,firefly2442/godot,Valentactive/godot,Shockblast/godot,pkowal1982/godot,akien-mga/godot,guilhermefelipecgs/godot,sanikoyes/godot,firefly2442/godot,guilhermefelipecgs/godot,honix/godot,sanikoyes/godot,BastiaanOlij/godot,Shockblast/godot,vkbsb/godot,Faless/godot,DmitriySalnikov/godot,firefly2442/godot,Valentactive/godot,firefly2442/godot,josempans/godot,vnen/godot,Valentactive/godot,akien-mga/godot,firefly2442/godot,DmitriySalnikov/godot,Zylann/godot,sanikoyes/godot,godotengine/godot,akien-mga/godot,godotengine/godot,godotengine/godot,vkbsb/godot,vnen/godot