Merge pull request #22 from martyone/fix-sandboxing

Fix sandboxing
[features] Add proto for featuremanager
Merge branch 'master' of github.com:nemomobile/ssu
[ssud] Automatically exit ssud after a reasonable amount of time
[ssu] Add methods to return pretty strings about devices for use in UI
[ssu] Prepare support for special store repositories
[jolla] Resolve store credentials from store-client via dbus
Merge pull request #24 from kananoja/store_credentials

[jolla] Resolve store credentials from store-client via dbus
[ssu] Get proxy configuration from connman