awful.menu.clients: Raise the newly focused client

Raising it makes it more obvious that the focus was really changed and makes
working with the client easier since it's, well, raised.

Signed-off-by: Uli Schlachter <psychon@znc.in>
Signed-off-by: Julien Danjou <julien@danjou.info>

lib/awful/menu.lua.in

@@ -283,6 +283,7 @@ function clients(menu, args)
                                       tags.viewmore(c:tags(), c.screen)
                                   end
                                   capi.client.focus = c
+                                  c:raise()
                               end,
                               c.icon }
     end