Remove shortcuts and adapt extension to activeTab permission
diff --git a/src/js/page.js b/src/js/page.js
index 9ca2463..5fe494d 100644
--- a/src/js/page.js
+++ b/src/js/page.js
@@ -847,10 +847,11 @@
   /**

   * Remove an element

   */

-  init: function() { 

+  init: function() {

     if (document.body.hasAttribute('screen_capture_injected')) {

       return;

     }

+    document.body.setAttribute('screen_capture_injected', true);

     if (isPageCapturable()) {

       chrome.extension.sendMessage({msg: 'page_capturable'});

     } else {