Added app url setting to project.
Added app url setting to project.

skbkontur/NuGetGallery,projectkudu/SiteExtensionGallery,KuduApps/NuGetGallery,grenade/NuGetGallery_download-count-patch,mtian/SiteExtensionGallery,JetBrains/ReSharperGallery,skbkontur/NuGetGallery,projectkudu/SiteExtensionGallery,KuduApps/NuGetGallery,JetBrains/ReSharperGallery,grenade/NuGetGallery_download-count-patch,KuduApps/NuGetGallery,ScottShingler/NuGetGallery,KuduApps/NuGetGallery,ScottShingler/NuGetGallery,mtian/SiteExtensionGallery,mtian/SiteExtensionGallery,grenade/NuGetGallery_download-count-patch,KuduApps/NuGetGallery,projectkudu/SiteExtensionGallery,JetBrains/ReSharperGallery,skbkontur/NuGetGallery,ScottShingler/NuGetGallery