emit failed for all kinds of socket error
Add a selective filter for leap logs.
Closes: #3504
Fix local offset calculation. Closes #3595.

Python returns the timezone with the opposed sign to the standard
notation.
Display correct service name in wizard.
Merge remote-tracking branch 'ivan-github/bug/3595_gateway-selection-problem' into develop
Merge remote-tracking branch 'ivan-github/bug/3657_display-correct-service-name-in-wizard' into develop
Logout stops mail services. Closes: #3553
Merge remote-tracking branch 'kali/bug/logout-stop-mail' into develop
Remove last page from wizard.

Also remove the globe image because is no longer needed.
Merge remote-tracking branch 'ivan-github/feature/3616_remove-last-page-from-wizard' into develop
Merge remote-tracking branch 'kali/feature/logging-filter' into develop
Properly daemonize the call to polkit gnome authentication agent.
Closes: #3554
Merge remote-tracking branch 'kali/bug/fix-polkit-aut' into develop
Merge remote-tracking branch 'kali/bug/fail_soledad_when_socketerr' into develop
Set appropiate error on login cancel. Closes #3582
Merge remote-tracking branch 'ivan-github/bug/3582_set-appropiate-message-on-login-cancel' into develop
warn user if python3 is used to run setup
Enable preferences option in systray. Closes #3717
Merge remote-tracking branch 'ivan-github/bug/3717_enable-preferences-option-in-systray' into develop
Merge remote-tracking branch 'kali/bug/warn-with-python3' into develop