Sync for Lemmy Beta 106 release noteslocked

Ultra

• Favorites are now saved and syncronized between devices automatically
• Favorites are now restored when restoring ultra
• Favorite ordering is now saved and synchronized between devices

Other fixes

• Fixed incorrect coloring of the Sync logo for the onboarding page
• Fixed incorrect coloring of the Sync logo on the restore purchases page
• Updated the colors in the ultra preview failed image
• Updated the swipe upvote / downvote colors to match the current theme