[XB] User Title Unlock 2.0.2

• Added help page with user titles list
• Fixed potential "XF\DB\DuplicateKeyException" when awarding users with title

2.0.1:

• XF 2.3 support
• Avoid "blob can't have default value" errors on MySQL with strict mode enabled
• Fixed typo in data registry causing constant rebuilding of caches
• Fixed user titles not displaying if there's less than 1 category or 2 titles

2.0.0 Patch Level 6:
Fixed user title edit link in log