Allow sorting using the header of the closed patches too

Sorting order impacts closed patches too. So not showing the arrow that
indicates sort direction on that header is confusing. While we're at it,
we might as well allow people to toggle sorting direction using that
header too.

This also automatically fixes the problem that the cell in the closed
patches header did not contain any title at all.

Author: JelteF

pgcommitfest/commitfest/templates/commitfest.html

@@ -60,17 +60,17 @@ <h3>{{p.is_open|yesno:"Active patches,Closed patches"}}</h3>
 <table class="table table-striped table-bordered table-hover table-condensed">
  <thead>
   <tr>
-   <th>{%if p.is_open%}<a href="#" style="color:#333333;" onclick="return sortpatches(5);">Patch</a>{%if sortkey == 5%}<div style="float:right;"><i class="glyphicon glyphicon-arrow-down"></i></div>{%endif%}{%endif%}</th>
-   <th>{%if p.is_open%}<a href="#" style="color:#333333;" onclick="return sortpatches(4);">ID</a>{%if sortkey == 4%}<div style="float:right;"><i class="glyphicon glyphicon-arrow-down"></i></div>{%endif%}{%else%}ID{%endif%}</th>
+   <th><a href="#" style="color:#333333;" onclick="return sortpatches(5);">Patch</a>{%if sortkey == 5%}<div style="float:right;"><i class="glyphicon glyphicon-arrow-down"></i></div>{%endif%}</th>
+   <th><a href="#" style="color:#333333;" onclick="return sortpatches(4);">ID</a>{%if sortkey == 4%}<div style="float:right;"><i class="glyphicon glyphicon-arrow-down"></i></div>{%endif%}</th>
    <th>Status</th>
    <th>Ver</th>
    <th>CI status</th>
    <th>Author</th>
    <th>Reviewers</th>
    <th>Committer</th>
-   <th>{%if p.is_open%}<a href="#" style="color:#333333;" onclick="return sortpatches(3);">Num cfs</a>{%if sortkey == 3%}<div style="float:right;"><i class="glyphicon glyphicon-arrow-down"></i></div>{%endif%}{%else%}Num cfs{%endif%}</th>
-   <th>{%if p.is_open%}<a href="#" style="color:#333333;" onclick="return sortpatches(1);">Latest activity</a>{%if sortkey == 1%}<div style="float:right;"><i class="glyphicon glyphicon-arrow-down"></i></div>{%endif%}{%else%}Latest activity{%endif%}</th>
-   <th>{%if p.is_open%}<a href="#" style="color:#333333;" onclick="return sortpatches(2);">Latest mail</a>{%if sortkey == 2%}<div style="float:right;"><i class="glyphicon glyphicon-arrow-down"></i></div>{%endif%}{%else%}Latest mail{%endif%}</th>
+   <th><a href="#" style="color:#333333;" onclick="return sortpatches(3);">Num cfs</a>{%if sortkey == 3%}<div style="float:right;"><i class="glyphicon glyphicon-arrow-down"></i></div>{%endif%}</th>
+   <th><a href="#" style="color:#333333;" onclick="return sortpatches(1);">Latest activity</a>{%if sortkey == 1%}<div style="float:right;"><i class="glyphicon glyphicon-arrow-down"></i></div>{%endif%}</th>
+   <th><a href="#" style="color:#333333;" onclick="return sortpatches(2);">Latest mail</a>{%if sortkey == 2%}<div style="float:right;"><i class="glyphicon glyphicon-arrow-down"></i></div>{%endif%}</th>
 {%if user.is_staff%}
    <th>Select</th>
 {%endif%}