[MOS-879] Fixed misleding SMS flow

Fixed misleading SMS flow after sending error.
When modem was rebooting attempt to send SMS was causing
Rejected by no sim popup, which was misleading for user.

[MOS-29] Fix invalid screen after missed call

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

[MOS-483] Import SIM card contacts properly

According to information elaborated by Quectel, the contacts don't have
to be saved on a SIM card contiguously and the only way to make sure all
of them are imported is to request for the range [1, 250] (first to
biggest allowed index).

[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-840] VoLTE switch unavailability fix

Added checking if a SIM card is present in the active slot
during ApplicationSettings initialization so that in case
there's no SIM, the VoLTE switch is made anavailable to
toggle.

[MOS-807] Unpacking update package

* Added unpacking and validating of
update package
* Removed 'utils-bootconfig'
* Added 'tar' module
* Minor compilation issues fixed

[MOS-869] Correct typo in file name

Now (correctly): 'TetheringHandler.cpp'

[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-840] Render VoLTE unavailable if no SIM card

Also, done a minor code cleanup.

[MOS-813] Emergency calling fixed

User is now able to make emergency call with no sim card
inserted. RF functionality in modem is still disabled
until sim card is selected by user.

[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-655] USSD body in log

USSD body is printen in log, it will help to solve some customer issues.

[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-825] VoLTE steering according to IMSI

Steering the GUI and the modem according to
whether VoLTE is permitted for the active
SIM card's operator. This is done based on
the SIM card's IMSI string.

Additionally, made logging more consistent.

[MOS-816] Add parse and filter IMSI

Added reading IMSI and parsing US MCC and MNC.
MCC and MNC are filterd if they are TMobile US.

[MOS-821] Adjust VoLTE GUI basing on operator

When VoLTE isn't permitted for the current SIM
card's operator, display information only.
Otherwise, display a switch.

[MOS-811] Make SMS modem domain in line with voice

Ditto

[MOS-809] Remove dead code around celular channels

Ditto

[MOS-793] Connect GUI and modem VoLTE steering

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

[MOS-641] Fix SIM cards window

Creating menus and actions depending on the SIM card
lock status.