Click on Yahoo ID to open Y! messenger.
Ad-hoc distribution
Calling Y!msg works now.

* Correct the URL to Y!msg.
* Always use App Store to install Y!msg.
Non-blocking fetching for data and images.

* Fetch data and images asyncrhonously.
* Minimum iOS requirement is 5.0.
* Show spinners to indicate network activity.
* Employee view stops at CEO correctly.
* There seems to be two IDs used by Marissa Mayer.  Normalize them.
Some error handling.  Not tested.
Click on cube number to open map.

* New SpinnerAlertView class.
* New MapViewController for showing map.
* Remove some unused code.
No action for empty fields.