refactoring.

 & servers

adding of presence callback for signal newPresenceNotification

Emission of signal newPresenceNotification in sipbuddy.cpp when a presence modification occures

Presence notificaton for IP2IP
DBUS methods for publishing presence
Adding phone status (ringing,on the phone,ready)

Some files were not added in the previous commit

This code enable presence subscription / notification based on Asterisk hint mechanism.
The presence of a SIP account will be automatically pushed by Asterisk server.
DBus interface in CallManager (subsribePresence) is added to subscribe the presence of a buddy uri for an accountID.
Then presence notification are received in buddysip.cpp. Callback to UI must be there implemented.
Lot of commented code is still in the code. Work must be done to clean it.

checkAudio() was being called before the call was removed from the
call list.

Namely by telling the client who triggered recording whether or not
recording has started.

This was breaking dial tone functionality.

This allows other applications to resume audio.

This fixes building after running ./configure --without-tls

This had broken translations

Launchpad's translation archive format has changed, it no longer
contains launchpad-import.

Signed-off-by: Tristan Matthews <tristan.matthews@savoirfairelinux.com>