[Moziax] hold button on new incoming call popup

[mirza sahib]

when MozIAX receives an inbound call, the pop up should have an option 
(CANCEL|OK|HOLD) to:

HOLD - which will answer the call and immediately put it on hold (agents 
who are already talking on the queue, want to be able to do this, rather 
than telling call 1, please hold, then answer call 2, tell them to please 
hold, then go back to call 1)

also, have we played with voice mail status?

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wasim h. baig | principal consultant | convergence pk | +92(300)8508070