fix import file too long title on mobile

src/components/ImportTask.vue

@@ -26,7 +26,9 @@
           <td>
             <h4 class="ui header align-right">
               <div :data-tooltip="importFile.geojson_file_name">
-                {{ importFile.geojson_file_name | subString }}
+                <div class="ellipsis">
+                  {{ importFile.geojson_file_name | subString }}
+                </div>
                 <div class="sub header">
                   ajouté le {{ importFile.created_on | setDate }}
                 </div>
@@ -234,5 +236,9 @@ and also iPads specifically.
   .margin-left {
     margin-left: 94%;
   }
+  h4.ui.header {
+    margin-left: 60px;
+    white-space: nowrap;
+  }
 }
 </style>