Thread merge manager 1.0

Description:

Adds additional restrictions for Merge threads function.

If you have moderators, this very important add-on can eliminate accidental merging of threads which cannot be reversed short of restoring the database and file system.

Features:

All phrases start with threadmergemanager_ for your convenience.

Questions and answers:

Q: Are admins allowed to bypass restrictions?
A: Yes.

Q: What is the maximum number of threads allowed to be merged?
A: Moderators are allowed to merge only two threads at a time.