Add back the device details to the settings app rather than another
standalone program.

Remove old icons which aren't used in UPower and add new icons
that are.

Add 32px device-status files and update makefile Only install the pngs and keep svgs in the repo for better maintenance

Set brightness and DPMS related settings insensitive conditionally Previously these parts of the UI were simply hidden, we'll implement an infobar later that informs the user that these things aren't available

With UPower < .99 this patch will make the battery panel icon
dynamic by displaying the ups or battery device with the highest
percentage. This patch also cleans up a couple small issues with
the last two patches (unused function and variable).

When upower reports unknown there is no useful information for the
device so present that to the user rather than a 0% battery level.

Redo settings dialog from scratch and remove unused code Remove trayicon and treeview code, make dpms mode sensitive conditionally Settings dialog now mostly conforms to Xfce's HIG

The 'online' state only works for line_power devices so make the
fully charged state use the charged icon so it's more accurate.