[MOS-29] Fix invalid screen after missed call

Fix of the issue that missed call triggered
view that shown 'call ended' text.

[MOS-870] Fix undesirable notification on call

Fixed the case when a dot appeared around the Calls app
tile notifying about an answered call.

[MOS-812] Improved CUSD message handling

* Added handling for shorter +CUSD formats, thus got rid of a crash.
* Added handling for the "push session"+"action required" state of a
  USSD interaction with the network.

[MOS-810] Fixed call state timer termination

Fixed the problem that the call state polling
timer wasn't terminated in some cases, so the
modem command AT+CLCC had still been issued
until e.g. another call was made. In such cases,
this lead to inability for the modem to go to
a power-down state due to constant activity and
thus lead to battery power waste.

Additionally, fixed a hidden bug that TimerRing
hadn't got a virtual destructor.

Also thrown out some dead code.

[MOS-839] Fix crashes after a few VoLTE toggles

Those were occuring after calls which were preceded by
a few VoLTE on/off toggles.

[MOS-793] Connect GUI and modem VoLTE steering

Additionally, fixed many covert bugs that emerged due to
modem restarting.

[MOS-259][MOS-602] Fix no calllog entries in DND mode

Fixed no calllog entries in DND mode, which were caused
by not starting the call in DB interface, so no entry was created.

Moreover, small optimizing of the DND handling.

[MOS-670] Change clang-format AlwaysBreakTemplateDeclarations to Yes

Add --all and --fix-all options to style-check-hook

[MOS-665] Fix incorrect outgoing call duration

Fix of the issue that cancelled or rejected
outgoing call had improper duration in
calllog.

[MOS-667] Fix loudspeaker switching

Added missing state in call state
machine, required to switch call
sound to loudspeaker before the
call has been answered or rejected.

[MOS-612] Fix typos about incoming calls

Ditto

[MOS-559] Fix phone unlock after mode change

Correction of the previous fix addressing this issue.
Previous idea didn't work when popup tried to
display in application other than ApplicationDesktop

[MOS-298] HALize ServiceEink

Add HAL to ServiceEink
Remove dead code from Linux eink substitute
Fix LUTS.bin refresh problems on simulator

[MOS-559] Fix unlock when phone started not in Connected mode

Fix of the issue that when phone was started in
mode different than Connected, next mode changed
resulted in bypassing of the lock.

[MOS-556] Fix call rejection in DND

Calls from a favorite contact for enabled notifications
were rejected.

[MOS-463] Unify cellular namespace

Unified cellular namespace, fixed test buildiing,
removed some unused includes

[MOS-463] Fix no dialing state during BT turned on

When BT was connected (or just turned on) there was no dialing state -
the call went directly to ongoing call. Moreover, fixed no ringing
sound during ringing state - there was a bug in BT stack.

[MOS-419] Removed AbortCall as popup and fixed tethering poup

Removed dead code causing harm
Moved tethering to call logic

[MOS-459] Wait with GUI change till RING delay

As in the description, we can wait with audio etc too - as it's stupid
othervise

[MOS-460] Call starting - no audio beep when calling

Fixed