Tray icon for Dropbox in KDE4

dropboxd in .dropbox-dist/dropbox-lnx.x86_64-20.4.19 change to (added /usr/bin/dbus-launch)

#!/bin/sh
# Copyright 2008-2015 Dropbox, Inc.
#
# Environment script for the dropbox executable.
PAR=$(dirname "$(readlink -f "$0")")
OLD_LD_LIBRARY_PATH="$LD_LIBRARY_PATH"
export OLD_LD_LIBRARY_PATH
export QT_PLUGIN_PATH=
exec /usr/bin/dbus-launch "$PAR"/dropbox "$@"