Signup abuse detection and blocking 1.17.0

• Fix possible errors when using the IP checking function for multiple accounts
• Fix "Undefined index: name" error
• Cleanup user registration logs on user delete & ensure user registration logs are assigned to the correct user on merge

• Fix errors during installing via the GUI instead of CLI
• Update XF2.1 Approval queue support, remove useless warning icon on user signup record display
• When displaying username registration log, make detected multiple-account name clickable link

• Fix possible "[E_NOTICE] Undefined index: user_id" when upgrading from old XF1 versions of Alter Ego Detector for XF1

• Display improved spam-log formatting for users in approval queue with XF2.1+

• Fix "[TypeError] Argument 1 passed to XF\Entity\User::canStartConversationWith()" with deleted user

• Properly migrate XF1 alterego report format into a XF2.1 compatible structure
  • Required if upgrading to XF2.1 reports; Error doing JSON conversion xf_report.content_info (report_id=24745): Malformed UTF-8 characters, possibly incorrectly encoded

• Correctly check "Multiple account View reportings" permission

• Missing phrase usage in bbcode template
• Fix _preSave/_postSave in some entities was not protected
• Add "Include raw information into reported content" option (default disabled) used to expose the information to search.
• Add permission checks to multi-account bbcode block
• Push can-view-multi-account permission check into bbcode rendering and viewing a multi-account thread/conversation/report
• Update Multiple Account To Thread child-addon
• Release Multiple Account To Conversation child-addon

• Add an icon
• Previous 'Multiple account to thread extra' has now been moved to a separate (free) product.
  • Use Multiple account to thread add-on to send multiple account reports to threads.

• Fix possible "ErrorException: [E_NOTICE] Trying to get property 'default_value' of non-object" in installer
• XF2.1 approval queue compatibility