rollbar.js checkIgnore configuration to ignore IE7 errors

gistfile1.js

_rollbarConfig = {
  accessToken: "token here",
  checkIgnore: function(isUncaught, args, payload) {
    var isIE7 = (window.navigator.userAgent.indexOf("MSIE 7") !== -1);
    if (isUncaught && isIE7) {
      // uncaught error, and we are in IE 7. return true to ignore.
      return true;
    }
    // don't ignore anything else
    return false;
  }
}