Accurately display connectivity info in tablet status bar

Currently, if the connected network is something other than a Wi-Fi
network or a mobile network, the status bar popup would display
"No Internet Connection" which is misleading.

Patched wifiLabel (which is only used here anyway) to also allow
other connectivity (bluetooth, ethernet) to display correctly.

Before: http://imgur.com/YMB2C
After: http://imgur.com/kFt3Q

Change-Id: I2ac8d453e001c5ac14c0f2ebd97e1ef73551c37e