Updates to control panel, mostly to make them work on distributed server.
Merge remote-tracking branch 'upstream/release-0.11' into update_control_panel

Conflicts:
	kalite/templates/control_panel/device_management.html
Merge branch 'release-0.11' into update_control_panel
Convert queryset to a list for efficiency.
Save the SyncSession from the api_client when changing sync counts.
Store host being connected to as part of client-side sync session.
Merge pull request #894 from jamalex/update_control_panel

Updates to control panel, mostly to make them work properly on distributed server.