Alert Improvements by Xon 2.10.9

• Fix XF2.0 support, and prevent duplicate queries on XF2.1
  

• Fix AdminCP User edit setting 'alerts page skips mark read' to the same value as 'alerts pop-up page skips mark read'

• Fix that marking extra alerts as read was not working as expected with XF2.1+

• Fix "Group alerts" option to group by day, and not per-minute
• Use phrase groups for 'yesterday/today' phrases to avoid extra SQL queries

• Add options icon
• Cleanup XF2.1 support
• Add XF1-style 'star' to unread/new alerts
• Add visual seperator between read & unread alerts in alerts pop-up when "Display unread alerts above read alerts in pop-up" is enabled

• Fix "Unknown Accessed unknown getter 'title' on XF:ReportComment" from report comment reaction/like summaries

• For install, remove old XF1 grouped alerts to avoid errors about unknown templates

• php 7.4 compatibility update (Requires XF v2.1.3)

• Add "Display unread alerts above read alerts in pop-up" option
• Add per-user option to make viewing alerts pop-up skip marking it as read

• Fix link generation for report summary (likes/reactions/etc) alerts
• Fix your profile post comment like/reaction summaries link to the profile and not the profile post comment
• Fix profile post like/reaction summaries link to the profile and not the profile post