Fixes for iPad and small screens

• iPad: fixed an issue where the onboarding couldn't be closed on first launch because its buttons were pushed off screen
• The app language now applies everywhere, even when it differs from your device language (EXIF, dialogs, error messages)
• iPhone SE and mini: onboarding and the photo info panel now fit on screen
• Larger tap targets for stars, flags, color labels and filters
• The EXIF panel no longer covers the filmstrip
• Settings: cleaner on large screens, and text no longer scrolls under the clock
• Minor fixes and improvements