The displayed panel should always match the selection in the panel
list. That implies that after swapping out the list (for instance
by browsing Devices or Details), we need to update the panel rather
than keeping the old one around until the user manually selects a
row. The easiest way to achieve that is to activate the panel list
after a view change when appropriate.
https://bugzilla.gnome.org/show_bug.cgi?id=783429
When the active panel is not changed through sidebar navigation,
e.g. by calling the Control Center through command line and asking
to open a specific panel, the panel is correctly opened but the
sidebar is not updated to reflect that.
Fix that by selecting the externally set panel row, and eventually
moving to the correct list.
https://bugzilla.gnome.org/show_bug.cgi?id=769063
As the sidelist gets more complex, managing it in CcWindow
would make it very confusing.
This patch introduces the CcPanelList, a widget that manages
the sidelist.
https://bugzilla.gnome.org/show_bug.cgi?id=767301
