The screen for adding new ban triggers or modifying existing ones.

• Adding new ban triggers:
• Accessed by ?action=ban;sa=edittrigger;bg=x
• Uses the ban_edit_trigger sub template of ManageBans.
• Editing existing ban triggers:
• Is accessed by ?action=ban;sa=edittrigger;bg=x;bi=y
• Uses the ban_edit_trigger sub template of ManageBans.