Improve modal and implement deduplication

core/templates/ui/drilldown/drilldown.html

@@ -179,7 +179,7 @@
             </div>
           </div>
           <div class="column is-narrow">
-            <div class="field has-addons">
+            <div class="field has-addons block">
               <div class="control has-icons-left">
                 <span class="select">
                   <select id="source" name="source">
@@ -215,6 +215,18 @@
                 </a>
               </p>
             </div>
+            <div class="control">
+              <label class="button has-text-link">
+                <input type="checkbox"
+                       name="dedup"
+                       {% if params.dedup == "on" %}
+                         checked
+                       {% endif %}>
+                <span class="icon" data-tooltip="Deduplicate results">
+                  <i class="fa-solid fa-copy"></i>
+                </span>
+              </label>
+            </div>
           </div>
           <div class="column is-narrow">
             <div id="sentiment block">