Button captions can be bound once

index.html

@@ -288,12 +288,12 @@ $ openssl req -nodes -newkey rsa:2048 -keyout relay.pem -x509 -days 365 -out rel
 
                 <div bindonce ng-repeat="metadata in bufferline.metadata">
                   <div ng-show="metadata.visible">
-                    <button class="btn btn-primary pull-right" ng-click="metadata.visible = false">Hide {{ metadata.name }}</button>
+                    <button bindonce class="btn btn-primary pull-right" ng-click="metadata.visible = false">Hide {{ metadata.name }}</button>
                     <div ng-bind-html="metadata.content"></div>
 
                   </div>
                   <div ng-hide="metadata.visible">
-                    <button class="btn pull-right" ng-class="{'btn-warning': metadata.nsfw, 'btn-primary': !metadata.nsfw}" ng-click="metadata.visible = true">Show {{ metadata.name }}</button>
+                    <button bindonce class="btn pull-right" bo-class="{'btn-warning': metadata.nsfw, 'btn-primary': !metadata.nsfw}" ng-click="metadata.visible = true">Show {{ metadata.name }}</button>
                   </div>
                 </div>
               </td>