Piwigo 16 compatibility, Bug fixes

• Piwigo 16 compatibility:

• Adds 3xLarge and 4xLarge derivatives
• Manages multi-language album and image descriptions
  • Changes icon shown in upload queue button when an issue is encountered

Bug fixes:
• Fixes position of top/right buttons on iPad in preview mode
• Fixes colour of album title in some situations
• Fixes undefined preview image size in rare occasions
• Fixes a crash occurring when fetching image data from the server
• Fixes a few translations (regression)

What's Changed

• Version 4.1.3 by @EddyLB in #633

Full Changelog: v4.1.2...v4.1.3