Status/error refactor. Fix firefox bugs.

- All state/status updates go through updateState routine which
  updates the status line also.

- Old firefox (and opera) don't support canvas createImageData, so use
  getImageData as replacement.

- Add console.warn and console.error stubs so that firefox without
  firebug doesn't crap out.

- If no WebSockets then error if no flash or if URL is location (flash
  will refuse to load the object for security reasons).

include/util.js

@@ -2,6 +2,8 @@ if ((!window.console) || (! /__debug__$/i.test(document.location.href))) {
  // non-debug mode, an empty function  
   window.console = window.console || {};  
   window.console.log = function(message) {}; 
+  window.console.warn = function(message) {}; 
+  window.console.error = function(message) {}; 
 }
 
 function dirObj(obj, depth, parent) {