fix

views/partials/popover-models.html

@@ -34,6 +34,7 @@
             element.classList.remove('unselected');
             element.classList.add('selected');
         }
+        toggleSendButton();
     }
 
     function getSelectedModelsIDs() {
@@ -42,7 +43,7 @@
         for (var i = 0; i < selectedModels.length; i++) {
             selectedModelsIDs.push(selectedModels[i].getAttribute('value'));
         }
-        return JSON.stringify(selectedModelsIDs);
+        return selectedModelsIDs.length > 0 ? JSON.stringify(selectedModelsIDs) : '[]';
     }
 </script>
 
@@ -51,11 +52,12 @@
         border: 2px solid #3273dc;
         /* Bulma's primary color */
         border-radius: 4px;
-        padding: 2px;
+        padding: 1px;
+        margin: 2px;
     }
 
     .unselected {
         border-radius: 4px;
-        padding: 4px;
+        padding: 3px;
     }
 </style>