Delete logs/log files won't blow up

src/UI/System/Logs/Files/LogFileLayout.js

@@ -143,7 +143,11 @@ define(
             _refreshLogs: function (buttonContext) {
                 this.contents.close();
                 var promise = this.collection.fetch();
+
+                //Would be nice to spin the icon on the refresh button
+                if (buttonContext) {
                     buttonContext.ui.icon.spinForPromise(promise);
+                }
             },
 
             _commandComplete: function (options) {

src/UI/System/Logs/Table/LogsTableLayout.js

@@ -120,7 +120,10 @@ define(
             _refreshLogs: function (buttonContext) {
                 this.collection.state.currentPage = 1;
                 var promise = this.collection.fetch({ reset: true });
+
+                if (buttonContext) {
                     buttonContext.ui.icon.spinForPromise(promise);
+                }
             },
 
             _commandComplete: function (options) {