Set up auto-reconnect

[nkoporec]

If you don't have the internet connection and open the app, it will display the no internet warning, when you connect to the internet the app should try to auto-reconnect so we won't have to close the app and re-open it to get it working.

I'm using Macbook pro early 2015 and macOS Sierra.

Steps to reproduce:

1. Turn off the internet.
2. Open the Android Messages
3. Minimize Android Messages
4. Connect to the internet
5. Open Android Messages and the no internet error is still there.

Proposed solution
Set up a time interval to try to reconnect to the web server/service.