Refs: #53478

Refs: #53478

Still some issues about static/virtual declarations of methods for
Callback and ConfigurationCallback generated files.

Refs: #52673

Mimicks vlc-android architecture

Should fix build too.

Add audio rtp range prefs

Refs #45008

This commit introduces security check when user chooses a certificate,
displaying an icon showing test result (passed/failed)

Refs #45008

Refs #42054

This was introduced in order to prevent the infinite busy ringtone.
Unfortunately it does not fix our sdes issue.

Refs #41441

This commit introduces user-friendly feedback for security.
Not fully functionnal yet

Refs #40232

This commit introduces basic bluetooth support.
If a headset is paired to the phone, audio will be correctly rerouted.
This is still experimental, due to the lack of testing devices.

Refs #41293

Refs #40232

Integration of new security features implies modifications in call handling.
By default, when handling a call,  a SipCall object is created, but if ZRTP hooks
are activated, the call is dynamically subclassed, and becomes a SecureSipCall.

Refs #40939

SipCall keeps track of its security state, and store its SAS if needed.
This commit also introduce two new Fragments wrappers, for accounts and calls.
These wrappers reduce code duplication between fragments requiring hooks on daemon
signals.

Home interface now only have one list to display conferences (renamed conversations)
There are still some issues with conference mapping client side.

History is now stored in a lightweight ORM database.
Corners cases are still not treated, but simple calls are saved properly.

Every call is considered has a Conference, holding one or several SipCall.
This simplify extraction and storage of calls in history. It also provide a unique interface
to handle calls instead of two (which were SipCall and Conference).

Ringtones are routed to speakers for incoming calls