Allow filter links to be used in combination

Means you can see, for example emails that have failed.

Means adding:
- logic to generate links which can have a type parameter, a status
  parameter, or both
- a ‘pill’ UI component for seeing which filters you currently have
  applied
- some logic to change the page title based on which filters you have
  applied

app/assets/stylesheets/components/table.scss

@@ -79,10 +79,6 @@
 
   p {
     margin: 0 0 5px 0;
-
-    a {
-      text-decoration: none;
-    }
   }
 
 }