Course management course reordering arrows accessibility

From the audit report...

issue

The "up" and "down" arrow links do not make sense in or out of context

Impact on users

Reordering is hard using a combination of keyboard and screenreaders

Guidelines affected

2.4.4 Link Purpose

The purpose of each link can be determined from the link text alone or from the link text together with its programmatically determined link context, except where the purpose of the link would be ambiguous to users in general.