[choir] Make common error cases such 'no network' or "timeout exception" more direct, more expressive to the end user

[Gelassen]

Make common error cases such 'no network' or "timeout exception" more direct, more expressive to the end user.

This two cases should be distinguished.

Both cases should tell user "There is no connection to the internet. Are you connected?" or "There is no connection to the server. Try again later. If often repeats please contact the developer."

User stories:
As user if my device has wifi or cell network turned off I see the error message "There is no connection to the internet. Are you connected?"

As user if my device trying to send request to the server within a minute without positive result I see the error message "There is no connection to the server. Try again later. If often repeats please contact the developer."