Bug fixes

• No page refresh when the device changes orientation.
• No page refresh when scrolling dialog contents or notifications.
• Allow to exit from image selection without selecting anything (thanks to Daria-Ch for reporting).
• No crash when clicking any URI.
• Fixed cropping of round avatars in notifications.

Improvements

• Open the gallery (not documents) for selecting an image for upload.
• Selection of multiple images for upload (thanks to Daria-Ch for reporting).
• Downloading an image to the gallery, to Moera subdirectory.