Competitions for Xenforo 2 2.0.11

Change log

Xenforo 2.2 forum type compatibility update.
- Added automatic configuration for nodes to enable competition thread support on-the-fly (default=on).
- Added options toggle to prevent auto node configuration (defaults to enabled).

Release notes

The competition forum type needs to be enabled in a forum for a competition thread to correctly display tabs for the Competition and Discussion.
So we have added an admin option to automatically enable the competition type for a forum when a competition thread is created in it.
And we added the functionality to automatically enable competitions in forums on-the-fly when a competition thread is created there.
Admin is presented with an error if they try to create a competition where the thread's hosting forum does not have competition thread types enabled.