troubleshoot: read debugging from systemd journal.
check-device-ids.py: don't require root password
GIR: NOTHING is a Gdk.EventType (bug #1105229).
PhysicalDevice: convert to UTF-8 before comparing strings (bug #1108903).
Don't download OpenPrinting drivers in D-Bus service (bug #1052203).

It causes a deadlock.
Don't call monitor.refresh until the password callback has been set.
Avoid jobviewer traceback races (bug #1090479).
Fixed downloadable driver traceback (bug #982071).

Patch from Johannes Goller.
authconn: added method to find out if polkit is being used.
New 'Unlock' button for front-loading authentication.
Only check firewall when when needed.

This means when the user expanded the Network Printer row and there
are no discovered network printers.
Set sensitivity of widgets according to permission.
tx pull && make update-po
Bumped version for release.
Don't count e.g. 'socket' as a discovered network device.

Still need to check the firewall unless an actual device is found.
Polkit shouldn't be a hard requirement.
Handle failure when cups-pk-helper not installed (bug #1118836).
Removed 'as e' from last fix.
In CUPS 1.6b1, 'document-count' became 'number-of-documents'.
Remove debug print