For #194, convert the POTD management command to a celery task. Refactored to put the logic for the command into a function, and the command simply calls this function. The task can also just call this function. Added some basic tests for the new function.

.panel_wrapper div.current {
	height: 290px;
}

#id, #style, #title, #dir, #hreflang, #lang, #classlist, #tabindex, #accesskey {
	width: 200px;
}

#events_panel input {
	width: 200px;
}