Word Count Search 2.12.1

• Fix word-counts not being injected into thread list due to an incorrect check

• Fix injecting word-counts into threadmark'ed content which doesn't support word counts

• Fix word-count on post with a threadmark added after the creation did not ensure a word-entry was stored
• Fix word-count on thread entity was not always updating as expected
• Add CLI commands to rebuild word-count for posts/threads
• In threadmark list; Display per-category word-count in author stats, not the global word-count

• Minor tweak for Threadmark support; ensure word count is stored as an integer rather than a string to avoid weird mysql/php type handling.

• Remove injecting a * if a word-count only search is done, instead enable Search Improvement's "allow empty search" option.
  • Fixes issue with MySQL search support

• Improve compatibility with ElasticSearch Essentials
• Minor code cleanup

• Only show "Rebuild thread word-count" job if thread word-count is supported (aka Threadmarks is installed).
• Rework back-end code to better isolate how threadmarks are used to populate a thread's word-count.
  • Allows easy replacement of how a thread's word-count is populated.

• Fix "Invalid use of NULL value" with installer

• Fix modified threads did not trigger search re-indexing on as expected

• Move filters & input selection into template macros for better re-use by other add-ons (Required for Watch Thread filtering support)
• Tweak layout to be more compact and use XF2 numberbox instead of input type="number"