Add unknown field type icon

resources/frontend_client/app/icon_paths.js

@@ -86,6 +86,7 @@ export var ICON_PATHS = {
     },
     table:  'M13.6373197,13.6373197 L18.3626803,13.6373197 L18.3626803,18.3626803 L13.6373197,18.3626803 L13.6373197,13.6373197 Z M18.9533504,18.9533504 L23.6787109,18.9533504 L23.6787109,23.6787109 L18.9533504,23.6787109 L18.9533504,18.9533504 Z M13.6373197,18.9533504 L18.3626803,18.9533504 L18.3626803,23.6787109 L13.6373197,23.6787109 L13.6373197,18.9533504 Z M8.32128906,18.9533504 L13.0466496,18.9533504 L13.0466496,23.6787109 L8.32128906,23.6787109 L8.32128906,18.9533504 Z M8.32128906,8.32128906 L13.0466496,8.32128906 L13.0466496,13.0466496 L8.32128906,13.0466496 L8.32128906,8.32128906 Z M8.32128906,13.6373197 L13.0466496,13.6373197 L13.0466496,18.3626803 L8.32128906,18.3626803 L8.32128906,13.6373197 Z M18.9533504,8.32128906 L23.6787109,8.32128906 L23.6787109,13.0466496 L18.9533504,13.0466496 L18.9533504,8.32128906 Z M18.9533504,13.6373197 L23.6787109,13.6373197 L23.6787109,18.3626803 L18.9533504,18.3626803 L18.9533504,13.6373197 Z M13.6373197,8.32128906 L18.3626803,8.32128906 L18.3626803,13.0466496 L13.6373197,13.0466496 L13.6373197,8.32128906 Z',
     trash: 'M4.31904507,29.7285487 C4.45843264,30.9830366 5.59537721,32 6.85726914,32 L20.5713023,32 C21.8337371,32 22.9701016,30.9833707 23.1095264,29.7285487 L25.1428571,11.4285714 L2.28571429,11.4285714 L4.31904507,29.7285487 L4.31904507,29.7285487 Z M6.85714286,4.57142857 L8.57142857,0 L18.8571429,0 L20.5714286,4.57142857 L25.1428571,4.57142857 C27.4285714,4.57142857 27.4285714,9.14285714 27.4285714,9.14285714 L13.7142857,9.14285714 L-1.0658141e-14,9.14285714 C-1.0658141e-14,9.14285714 -1.0658141e-14,4.57142857 2.28571429,4.57142857 L6.85714286,4.57142857 L6.85714286,4.57142857 Z M9.14285714,4.57142857 L18.2857143,4.57142857 L17.1428571,2.28571429 L10.2857143,2.28571429 L9.14285714,4.57142857 L9.14285714,4.57142857 Z',
+    unknown: 'M16.5,26.5 C22.0228475,26.5 26.5,22.0228475 26.5,16.5 C26.5,10.9771525 22.0228475,6.5 16.5,6.5 C10.9771525,6.5 6.5,10.9771525 6.5,16.5 C6.5,22.0228475 10.9771525,26.5 16.5,26.5 L16.5,26.5 Z M16.5,23.5 C12.6340068,23.5 9.5,20.3659932 9.5,16.5 C9.5,12.6340068 12.6340068,9.5 16.5,9.5 C20.3659932,9.5 23.5,12.6340068 23.5,16.5 C23.5,20.3659932 20.3659932,23.5 16.5,23.5 L16.5,23.5 Z',
     "illustration-icon-pie": {
         svg: "<path d='M29.8065455,22.2351515 L15.7837576,15.9495758 L15.7837576,31.2174545 C22.0004848,31.2029091 27.3444848,27.5258182 29.8065455,22.2351515' fill='#78B5EC'></path><g id='Fill-1-+-Fill-3'><path d='M29.8065455,22.2351515 C30.7316364,20.2482424 31.2630303,18.0402424 31.2630303,15.7032727 C31.2630303,11.8138182 29.8220606,8.26763636 27.4569697,5.54472727 L15.7837576,15.9495758 L29.8065455,22.2351515' fill='#3875AC'></path><path d='M27.4569697,5.54472727 C24.6118788,2.26909091 20.4266667,0.188121212 15.7478788,0.188121212 C7.17963636,0.188121212 0.232727273,7.1350303 0.232727273,15.7032727 C0.232727273,24.2724848 7.17963636,31.2184242 15.7478788,31.2184242 C15.7604848,31.2184242 15.7721212,31.2174545 15.7837576,31.2174545 L15.7837576,15.9495758 L27.4569697,5.54472727' fill='#4C9DE6'></path></g>"
     },

resources/frontend_client/app/query_builder/FieldList.react.js

@@ -104,7 +104,7 @@ export default class FieldList extends Component {
 
     renderTypeIcon(field) {
         let type = getUmbrellaType(field);
-        let name = ICON_MAPPING[type] || 'close';
+        let name = ICON_MAPPING[type] || 'unknown';
         return <Icon name={name} width={18} height={18} />;
     }