fixed notifications bugs
1) Shows "Sorry we were not able to connect to wifi ... " error message
immediately on starting the frame (when it's not connected to wi-fi),
and every time you try to change wifi.
2) When I try to connect to a wi-fi network with the wrong password, it
does not give me the right error message (see 1.2 in the spec). The
message it currently says is "Network Is Not Connected."
Merge remote-tracking branch 'origin/master'