moblin-panel-status: Use the new mnb_im_status_row_set_enabled call
moblin-panel-status: Use the new mnb_im_status_row_set_enabled call

When we see enabled/disabled events trigger a refresh of the item using this
new state. Taking into consideration if we are online or not.

meego-netbook-ux/meego-panel-status,meego-netbook-ux/meego-panel-status