Let xfpm control X11's screensaver extension FIXME: dbus_init in power.c resets the configured values if xfpm restarts

Copy & paste error; It gets overwritten by the spin-down creation code.

Signed-off-by: Eric Koegel <eric.koegel@gmail.com>

Signed-off-by: Eric Koegel <eric.koegel@gmail.com>

Signed-off-by: Eric Koegel <eric.koegel@gmail.com>

Function parameter order is inconsistent, this can only lead to problems.

Signed-off-by: Eric Koegel <eric.koegel@gmail.com>

Can still be set through xfconf

On a upower notify/change signal, the devices entry was completely
recreated to update to the new settings. This patch changes it so
that only the items in that treeview get updated.

In xfpm_settings_advanced: Pointer returned from a function was
never used. Remove the entire line.

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

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

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

Signed-off-by: Eric Koegel <eric.koegel@gmail.com>

Hide settings menu only on desktop environment which have another
power manager, to make it appear on LXDE menu.

Signed-off-by: Eric Koegel <eric.koegel@gmail.com>

Make changes so that xfpm will compile in --enable-debug=full with
the nick/xfce4-dev-tools deprecated+seal branch.

An xfconf and settings option has been added so the user can disable
sending network manager to sleep.

Point to the online docs for xfpm's help. This also fixes it where
the help button was causing the preferences dialog to quit. Now
xfpm will also display the help page when plugged into the settings
dialog. This patch removes the old local docs as well.

When xfpm changes it's lock-screen setting, it will also attempt
to update xfce4-session. Additionally, xfpm will watch session's
lock-screen setting and update its own. This way there is one
single setting for both programs in the future, however xfpm will
continue to function stand-alone.