Keep Filtersettings across pagechanges

The View Filter on "Contact" and "Channel" pages will be resetted everytime you change between them or the map screen.

1. Filter for "Latest Message"
2. go for Contact page to channel page
3. go back
4. Filter is back at "Heard recently" or "Manual"

I would expect to keep the filter, maybe even accross App restarts.

Sincerely Eric