Unmaintained Multi Prefix 1.8.16

• Fix an issue where a thread attribute that should be skipped for logging could be logged
• Fix "Set Thread Options" forum filter
• Fix thread prefix moderator logging

• Fix Prefix Essential's prefix filtering support

• Update installer to populate required link tables so pre-install threads can still be filtered by prefix

• Support bulk-update prefixes via admin tools
• Support Prefix Essential's prefix counting

• Fix error when merging threads and merging prefixes

• Enforce forum maximums again, as the 1.7.x upgrade broke them
• Push max prefix's to front-end for user editing threads or thread titles.
  • Moderator aspects can potentially enter more prefixes but the backend will say no.

• Update installer to be more robust at validating the old prefixes

• Fix installer when Resource Manager is installed

• Prevent errors on invalid query string parameters

• Fix support for creating a thread with a prefix via datawriter