A links to all "list" pages to the main register page

[nuest]

https://codecheck.org.uk/register/ should, above the table, point to the list of codecheckers, the list of venues, etc.

Mock-up:

HTML used for the mock-up:

<div id="header">
<h1 class="title toc-ignore">CODECHECK Register</h1>
<h4 class="subtitle"><strong><a href="#">All venues</a></strong> | <strong><a href="#">All codecheckers</a></strong> </h4>
<hr style="border: 2px solid #008033; margin-top: 2em;">
</div>

For real implementation, the h4 should be an HTML unordered list that is horizontal with a pipe seperator, see https://stackoverflow.com/questions/9171699/add-a-pipe-separator-after-items-in-an-unordered-list-unless-that-item-is-the-la