Properly parse compiler errors for fiddles and mark them in the editor.

experimental/webtry/templates/content.html

 <section id="content">
 
   <template id="sourcesTemplate">
     <button id="" class=source><img width=64 height=64 src=""></button>
   </template>
 
   <div id="inputBitmapEnable">
     <input type="checkbox" id="enableSource" data-id="{{.Source}}">
     <label for="enableSource">Use an input bitmap</label>
   </div>
@@ skipping 38 matching lines @@
 
     <button class="btn btn-default btn-lg" id='embedButton' {{if not .Hash}}style="display:none;"{{end}}/>Embed</button>
     <input type="text" value="" id="embed" readonly style="display:none;">
   </div>
 
   <p>
   <img  touch-action='none' class='zoom' id='img' src='{{if .Hash}}/i/{{.Hash}}.png{{end}}'/>
   </p>
   <p id='zoomHex'></p>
 
-  <h2>Warnings and Errors</h2>
-  <pre id="output"></pre>
-  <h2>Runtime output</h2>
-  <pre id="stdout"></pre>
-
+  <div id="output-wrapper">
+    <h2>Build Issues (click errors to jump to that line)</h2>
+    <pre id="output"></pre>
+  </div>
+  
 </section>