Add filtering option for questions reviewed by the current user in question review list

sbas/templates/sbas/question_review_list.html

@@ -5,6 +5,16 @@
 
   <p>Showing questions matching the selected filters.</p>
 
+  <div class="mb-2">
+    <form method="get" class="d-inline">
+      <input type="hidden" name="reviewed" value="me" />
+      {% if filters.category %}<input type="hidden" name="category" value="{{ filters.category }}" />{% endif %}
+      {% if filters.status %}<input type="hidden" name="status" value="{{ filters.status }}" />{% endif %}
+      <button type="submit" class="btn btn-sm btn-outline-primary">Show only questions I've reviewed</button>
+    </form>
+    <a href="?" class="btn btn-sm btn-outline-secondary ms-2">Clear filters</a>
+  </div>
+
   <div class="mb-3">
     Active filters:
     {% if filters.category %}