/**
* Get a job queue object of the specified type.
* $params includes:
- * class : what job class to use (determines job type)
+ * class : What job class to use (determines job type)
* wiki : wiki ID of the wiki the jobs are for (defaults to current wiki)
* type : The name of the job types this queue handles
* order : Order that pop() selects jobs, either "timestamp" or "random".