Editor: tabindex=-1 on buttons so Tab stays in editor

Author: pepc84

editor/index.html

@@ -58,15 +58,15 @@
     <div class="pane-bar">
       <span class="pane-label">sketch.cpp</span>
       <span id="status"></span>
-      <button class="btn-run" id="btn-run" onclick="runSketch()">&#9654; Run</button>
+      <button class="btn-run" id="btn-run" onclick="runSketch()" tabindex="-1">&#9654; Run</button>
     </div>
     <div id="code"></div>
     <div id="error-panel"></div>
   </div>
   <div class="preview-pane">
     <div class="pane-bar">
       <span class="pane-label">Output</span>
-      <button class="btn-stop" onclick="stopSketch()">&#9632; Stop</button>
+      <button class="btn-stop" onclick="stopSketch()" tabindex="-1">&#9632; Stop</button>
     </div>
     <div id="preview-area">
       <div id="preview-placeholder">Press Run or Ctrl+Enter</div>