Always display first run wizard on first run.

* Display the wizard only the first time or if we don't have any provider
  configured.
* Remove unused proper provider setting.
* If we have a working provider (as a pinned one), the wizard won't show
  automatically after being displayed the first time.
* If we cancel the first time wizard and we have a configured provider
  (like the pinned one) the app will not close.
Merge remote-tracking branch 'ivan/bug/4143_display-first-run' into develop