Cccam ext (+dvbapi?) service message

= Reason for enhancement Ability to send service message to connected client.

The server webif may have a "message box". If box is sent from this web gui and protocol = cccam ext then the message will be send to client.

If client is proxy then is forwarded again to oscam-client

If client is running a supported dvb decoder (enigma2) we have to do an http call to http://127.0.0.1/web/message?text={messagetext}&type={messagetype}&timeout={messagetimeout}

ref:http://dream.reichholf.net/wiki/Enigma2:WebInterface#Message

= Possible impacts on other features None