[mod] separating categories

searx/templates/categories.html

@@ -0,0 +1,5 @@
+{% for category in categories %}
+    <div class="checkbox_container">
+        <input type="checkbox" id="checkbox_{{ category|replace(' ', '_') }}" name="category_{{ category }}" {% if category in selected_categories %}checked="checked"{% endif %} /><label for="checkbox_{{ category|replace(' ', '_') }}" class="cb"></label><label for="checkbox_{{ category|replace(' ', '_') }}">{{ category }}</label>
+    </div>
+{% endfor %}