[MOS-26] Add tethering info on status bar

When tethering is on, info appears in the status bar
and network coverage indicates "no connection"

[MOS-350] Restored notifications about PIN changes

Made SimInfo pop-ups completely omitted when
going back to windows.

Fixed the SimUnlockInputRequestParams's
constructor.

Done a bit of refactor in the places of
interest, e.g. naming clarification.

[MOS-718] Fix part of SIM unlocking

Fixed a potential bug in message handling,
refactored unclear naming and logic there
and in some other places.

[MOS-677] Fix crash on importing unprocessable contact

Fix of the issue that phone crashed when trying
to import contact with phone number that couldn't
be parsed.
Additionally minor code cleanup.

[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-608] Fix crash on phone turn off

Fix of the crash that sometimes happened
during system closing.

[CP-1448] Add storage info to device info endpoint

DeviceInfo endpont now contains information such as:
deviceSpaceTotal - total storage space on the device
systemReservedSpace - storage space on the device
reserved for the OS
usedUserSpace - storage space on the device used
for user files on the user partition

[MOS-598] Improved keyboard responsiveness

Add sentinel that increases and hold the CPU frequency
after a button press event

[BH-1356] Meditation stats backend

Added meditation statc backend.
Added temporary widget for testing
purposes and corresponding modules
(meditation stats presenter, window,model).

[MOS-589] Fix torch driver

Perform turn-off torch in only one place.
Before writing or reading i2c make sure the torch is power supplied.
Change old C-style cast to reinterpret_cast.

[BH-1509] Frontlight wont flash on snooze

Frontlight wont flash on snooze when alarm light is off
and automatic frontlight mode is on

[CP-1116] Add API to create and update draft message

This change allows to create and update draft SMS
with use of service-desktop API.

[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

[CP-1334] Return templateID after adding new one

No information about newly added message template
was returned. Now temaplateID helps to identify
newly added record.

[MOS-463] Unify cellular namespace

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

[MOS-515] Fix freezing on the on-boarding screen

The synchronization of the application startup
has been improved.

[MOS-411] Wired headset audio fix

Fixes non-working wired headset audio
during call

[CP-1135] Extend messages API by deleteThread method

Allow to delete single message thread specified by id
using messages endpoint API.

[MOS-450] Fix turn off torch on critical battery level

Torch is now disabled on critical low battery level.
It will protect from battery draining.