Added new icon for cloth mask

caimira/apps/templates/base/calculator.form.html.j2

@@ -299,7 +299,7 @@
         <input type="radio" id="mask_type_cloth"  name="mask_type" value="Cloth" onclick="require_fields(this)">
           <label for="mask_type_cloth">
             Cloth
-            <img class="mask_icons" src="/static/images/masks/ffp2.png">
+            <img class="mask_icons" src="/static/images/masks/cloth.png">
           </label>
       </div>
     </div>

caimira/tests/apps/calculator/test_model_generator.py

@@ -30,6 +30,7 @@ def test_model_from_dict_invalid(baseline_form_data):
     [
         ["No mask"],
         ["Type I"],
+        ["Cloth"],
     ]
 )
 def test_blend_expiration(mask_type):