User:Econterms/Extension for managing MediaWiki job queue

Sources of info and planning:
 * https://www.mediawiki.org/wiki/Manual:$wgJobRunRate
 * https://www.mediawiki.org/wiki/Manual:Job_queue
 * https://www.mediawiki.org/wiki/Manual:ShowJobs.php
 * https://www.mediawiki.org/wiki/Manual:Job_table
 * https://www.mediawiki.org/wiki/Manual:$wgRunJobsAsync