dbus service : removing service do not remove agent(s)
updating sample/agent
dbus service : doc sample/agent, a few simplification of client side
dbus service : doc-sample/agent, avoid multiple registration to signal on each 'run script'
dbus service : avoiding multi-connection on each 'run script' button
dbus service : doc-sample/agent, restoring 'Div' method
dbus-service : removing unused try/catch
Merge pull request #31 from fpaut/master

dbus service : removing service do not remove agent(s)