Added Info.plist branding

Brand-dependent setting in info.plist now read from brand_PoseGallery.xcconfig via target_PoseGallery.xcconfig (+1 squashed commit)
Squashed commits:
[2c9e11e] Added Info.plist branding

Brand-dependent setting in info.plist now read from brand_PoseGallery.xcconfig via target_PoseGallery.xcconfig