Fix installer recreating title column as preparation work for XF2.1 upgrade
Fix SQL importer incorrectly populating the post rating cache table
In content rating criteria, the "Given" ratings and uncategorized rating types should now work.
Importing Smilies no longer requires a category.
Changes for importing Smilies and adding Default Rating Types;
Can skip duplicates (identified by title)
Is atomic, any error aborts adding the batch.
For large tables, when use instant add column support if possible rather than giving up.