Adaway: Suggestion: add an option to import/export hosts sources

[superlex]

Currently there is an option to import/export blacklist and whitelist.
What about an option to import/export hosts sources?

Thanks for your work.

[PerfectSlayer]

I think about improving import / export feature of the application: remove it for your list section and move it to settings instead of adding a new import / export button.
Doing so, you could import and export whitelist, blacklist, redirection list and hosts sources at the same time.

What do you thing about it?

[superlex]

For me it's ok, thanks PerfectSlayer :)

[DrSaad77]

@PerfectSlayer
First Thanx for your hard work!
The stuffs you enumerated would be great!! At the same time, add setting backup/restore of the app, to the list. So that would be:
import and export for

whitelist & blacklist
redirection list
hosts sources
Main setting of the app itself
So One main Backup/Restore feature for the whole app 😉

[PerfectSlayer]

Hosts sources are now backed up! 🎉
Check PR #1189 for mote details.

[superlex]

Thank you very much :)