Bug fixes, Improved speed and cache management

• Faster deletion of images/videos
• Improved cache management (fewer data downloads)
• Returns to expected position of image collection after deletion/move

Bug fixes
• Buttons sometimes disabled when previewing images
• Image selection lost when cancelling some share actions
• Placeholders colour when editing image data in dark mode
• Title or author name lost when typed before changing privacy level or tags

Look at the list of issues closed by this release.