Fixes Roundup 3

• Fixed contrast on fun text on sgsgb2 theme, finding contrastful text is more gradual now
• Bookmarks and mute quick actions now shows menu on click instead of hover (it was annoying)
• Added 12h/24h setting for absolute time
• fixed 2.7 -> develop missing default pinned quick actions
• Removed duplicate setting (mobile post button related)
• Brought back title attribute to quick actions
• Removed extra dot in backup_pleroma.json exported file
• Mute reason fixes