[Xon] Conversation Essentials 2.7.6

• Fix admin-defined conversation label's delete page action generated bad links
• Change admin-defined conversation rules links are generated to be consistant with admin-defined conversation label links

• Fix lack of consistency with conversation export logs viewability checks
• Show a pending conversation export stub instead of hiding it's existence.
• Allow conversation export logs to be viewable after the user has left the conversation, but not if they have been kicked

• Require StandardLib v1.11.0+
  • Improve support for rendering templates in the mail & api contexts by correctly injecting template filters/functions into multiple rendering contexts
• Add type hinting to various add-on only methods

• Compatibility fix for Conversation Monitor add-on

• Prevent deadlocks when sending many simultaneous registration welcome conversations