Add a label for the username monitor

src/lib/make-toolbox-xml.js

@@ -461,6 +461,7 @@ const sensing = function (isStage) {
         ${blockSeparator}
         <block id="current" type="sensing_current"/>
         <block type="sensing_dayssince2000"/>
+        ${blockSeparator}
         <block type="sensing_username"/>
         ${categorySeparator}
     </category>

src/lib/opcode-labels.js

@@ -60,6 +60,10 @@ const opcodeMap = {
         category: 'sensing',
         label: 'loudness'
     },
+    sensing_username: {
+        category: 'sensing',
+        label: 'username'
+    },
     sensing_current: {
         category: 'sensing',
         labelFn: params => {