Add request prominence counts in admin UI

Make it easy to quickly see the distribution of prominence states for
requests on body and user admin pages.

The use case for this was wanting to know if a request hidden due to a
data breach was the first for the authority in question or yet another
in a long history of breaches.

We do try to minimise reduced prominence to specific messages or even
attachments after #1005 [1], so only showing request prominence counts
doesn't tell the whole story, but it's a start.

[1] #1005

app/views/admin_public_body/show.html.erb

@@ -120,6 +120,9 @@
 
 <h2>Requests</h2>
 
+<%= render partial: 'admin_request/prominence_counts',
+           locals: { info_requests: @public_body.info_requests } %>
+
 <%= render :partial => 'admin_request/some_requests', :locals => { :info_requests => @info_requests } %>
 
 <hr>

app/views/admin_request/_prominence_counts.html.erb

@@ -0,0 +1,12 @@
+<ul class="thumbnails">
+  <% InfoRequest::Prominence::VALUES.each do |prominence| %>
+    <li class="span3">
+      <div class="thumbnail">
+        <%= prominence_icon(prominence) %>
+
+        <%= prominence %>:
+        <%= info_requests.where(prominence: prominence).size %>
+      </div>
+    </li>
+  <% end %>
+</ul>

app/views/admin_user/show.html.erb

@@ -125,6 +125,9 @@
 
 <h2>Requests</h2>
 
+<%= render partial: 'admin_request/prominence_counts',
+           locals: { info_requests: @admin_user.info_requests } %>
+
 <%= render partial: 'admin_request/some_requests',
            locals: { info_requests: @info_requests } %>
 

doc/CHANGES.md

@@ -2,6 +2,8 @@
 
 ## Highlighted Features
 
+* Add count of requests in each prominence state to body and user admin pages
+  (Gareth Rees)
 * Improved notes feature, allowing multiple notes to be associated with bodies
   and requests. Association can either be direct or via a tag. Tagged notes are
   useful for displaying one note to a subset of bodies or requests which are all