[MOS-300] Remove unused variables

Remove unused variables from PVS Studio analysis

[MOS-269] Fix lock audio subsystem during voice call

Audio service is deadlocked on sentinel because IsBussy() method returns
that it's all the time bussy. Even though there is no ongoing audio
requested from either GSM or apps.

[BH-1405] Delay homescreen display to avoid blinking

Delay homescreen display to avoid blinking on startup

[BH-1407] Onboarding windows cleanup

Delete unused window name and simplify flows

[MOS-296] Merge fix popup stack issues

Fix popup stack issues with Harmony

[MOS-296] Merge SNVS cherry-pick conflicts fixed

Fix SNVS Harmony approach conflicts with master

[MOS-296] Merge fix extra files removed

Remove extra files added by mistake

[MOS-296] Merge new master commits into merge-stable-wip

Merge new master commits

[MOS-296] Merge remote-tracking branch 'origin/stable'

Merge stable Harmony branch into merge wip branch

[MOS-231] Updated bt stack

Bluetooth stack updated from 1.4.1 to 1.5.1.

[MOS-218] Fix broken documentation links

There are few broken links in the documentation that have been
corrected.  The cause is either errant whitespace in the link
or by confusing (link)[url] for [link](url).

[MOS-89] Fixed contact edit window erasing data

Fixed edit contact window erasing data on special character select.

[MOS-256] Turn off torch driver when not in use

We save on power consumption ~0.7 mA.

[MOS-273] Update Harness to detect Mudita Bell devices

Added detection of Mudita Harmony

[CP-1100] Fix update not working

Bumped ecoboot.bin asset version to v1.1.2

[MOS-225] Restore SystemManager service idle priority

It crashes othervise on use of deleted elements

[MOS-225] Review applied

As above.

[MOS-225] Fixed integer overflow issue in Bus

blocking calls implementation had a bug when exceeded
uint32_t value returned immediatelly instead waiting
for message

[MOS-225] Fixed no response from SystemManager service

SystemManager service had implementation of bus processing
which never sent responses. This rendered any blocking call
to SystemManager useless

[MOS-226] Moved algorithms and their data to separate classes

This way we have controll over what does what, and can test
them separatelly
Logging statistics update more and better data presented