[OzzModz] Scheduled Content 2.1.2 Patch Level 2

Fixed missing notifications after publishing threads/posts

Fix: suppress notification for scheduled conversation reply

Fix: Accessing unknown column user_id on XF:ConversationUser

• Fix: update scheduled post position after publish
• Fix: update thread last post date data

Changelog:
- Fix: Search index is not updated after content published

• Added page with own scheduled content and permission to see it
• Added option to limit max publication date (x days from current time)
• Performance improvements
• Improved all scheduled publications page
• Added scheduled content counter