Modify is_framed() so it returns boolean value

Aleksander Machniak

2014-08-04 44cfef0927614f3bc48ab3376791aecd31fc90d9

 program/js/app.js

@@ -1451,7 +1451,7 @@

  this.is_framed = function()
  {
    return (this.env.framed && parent.rcmail && parent.rcmail != this && parent.rcmail.command);
    return this.env.framed && parent.rcmail && parent.rcmail != this && typeof parent.rcmail.command == 'function';
  };

  this.save_pref = function(prop)