Time column heading for events on node details page mis-aligned

[Adam Collard]

MAAS Version 1.8.1+bzr4036-0ubuntu1 (trusty1)

On the node details page, the column heading for the time of the event doesn't align with the table contents (it heads a non-existent column)

<tr class="table-listing__row">
    <th class="t1"></th>
    <th class="t75" colspan="2"></th>
    <th class="t24"></th>
</tr>

Removing the colspan="2" gives better alignment. I'm assuming that bug 1477614 will deal with the width of the time column overall.