Disable excanvas experiment.

Also, move bugs from TODO to github issues.

docs/TODO

@@ -9,10 +9,6 @@ Short Term:
 - Timing delta between frames in proxy record log, for playback
   support (for demo and test).
 
-- Opera hang after second disconnect.
-
-- Opera event issues: keyboard not stopped. Middle mouse sticks.
-
 
 Medium Term:
 

include/canvas.js

@@ -19,7 +19,7 @@ var Canvas, Canvas_native;
     } else {
         pre = (typeof VNC_uri_prefix !== "undefined") ?
                             VNC_uri_prefix : "include/";
-        document.write(start + pre + "excanvas.js" + end);
+        //document.write(start + pre + "excanvas.js" + end);
         Canvas_native = false;
     }
 }());
@@ -150,7 +150,7 @@ init: function (id) {
     } else {
         console.warn("Using excanvas canvas emulation");
         //G_vmlCanvasManager.init(c);
-        G_vmlCanvasManager.initElement(c);
+        //G_vmlCanvasManager.initElement(c);
     }
 
     if (! c.getContext) { throw("No getContext method"); }