Replace divs with proper html5 landmarks. div.header -> header.header (class kept for css) div.subnav -> nav.subnav div.footer -> footer.footer Also since there are now two navs (primary on the left and the subnav with prev/next/index), all nav's get an aria-label to distinguish the subnav from the main nav.

def init_severity(db, cl, nodeid, newvalues):
    """Make sure severity is set on new issues"""
    if 'severity' in newvalues and newvalues['severity']:
        return

    normal = db.severity.lookup('normal')
    newvalues['severity'] = normal

def init(db):
    db.issue.audit('create', init_severity)