Added IP Address status under camera preview

The text area underneath the camera preview will now display the IP
addresses of the phone.  This is added to assist users
in setting the phone up as an IP camera.

The code for gathering IP address is located in the new NetworkUtil
class.

TODO: Currently the external IP tool is not workig and will need worked
on!

references:
*
http://stackoverflow.com/questions/523871/best-way-to-concatenate-list-of-string-objects
* http://stackoverflow.com/questions/3657284/get-my-phones-internal-ip