Handler for showing the keyboard statistics page.

def keyboard(table, day=None):
    """Handler for showing the keyboard statistics page."""
    cols, group = "realkey AS key, COUNT(*) AS count", "realkey"
    where = (("day", day),) if day else ()
    counts_display = counts = db.fetch(table, cols, where, group, "count DESC")
    if "combos" == table:
        counts_display = db.fetch(table, "key, COUNT(*) AS count", where,
                                  "key", "count DESC")
    events = db.fetch(table, where=where, order="stamp")
    for e in events: e["dt"] = datetime.datetime.fromtimestamp(e["stamp"])
    stats, collatedevents = stats_keyboard(events, table)
    days, input = db.fetch("counts", order="day", type=table), "keyboard"
    return bottle.template("heatmap.tpl", locals(), conf=conf)