[EGD-4410] Fix passcode change causing unlocking problem

This PR solves problem with unlocking and invalidity of password
after password change. It also refactors `SettingsAgent` implementation
to reduce unnecessary data copying.

[EGD-5995] Settings entry path parser fixed

Fixed: get value from setting when creating cache
Fixed: path parsing
Fixed: request settings value from db
Fixed: sql init script

[EGD-5906] Fix test_calendar_events

Unlock usb and enable test on CI

[EGD-5940] Add BT device unpairing

Implemented possibility to forget/unpair a device via GUI

[EGD-5880] Change mode related volume logic

Volume logic has been changed to make the
values independent from selected mode.

[EGD-5967] Add blank screen when off

Present blank screen to
inform the user that phone
is off

[EGD-5326] Fixed AT commands harness utility

We can now use test harness to send and check at commands

[EGD-5326] Fixed system messages logging crash

with messages debug utility and error on memory there  was crash

[EGD-5983] Remove volume label from music app

Removed volume label from application music player.
Volume level should be shown using new popup system.
Introduced minor fixes in music player.

[EGD-5741] Change cellular DataReceiverHandle refactor

All messages have been moved to separate handlers.

[EGD-5963] Unify type of UUID field in all endpoints

UUID is no longer stored as a string, since we are not
going to use 128b UUID.

[EGD-5059] Fix SMS thread UX issues

This PR correct following global UX issues that were noticed in SMS
threads:
- invalid Nav-bar margins (30px instead of 20px)
- invalid NAv-bar hight (54px instead of 50 px)
This PR corrects following SMS threads UX issues:
- invalid inputText's left margin (10px instead of 0px)

[EGD-5982] Fix no window refresh after pairing

Fixes no refresh after finished scan

[EGD-5981] Fix BT scan stop issue

Btstack's scan stop call was not working properly thus force stop
function has been added

[EGD-5980] Fix BT paired devices list

After pairing more than 1 device the paired device list showed
only the last paired. This commit fix this issue

[EGD-5047] Add support for newlib time

Add support for newlib time standard syscalls.

[EGD-5926] Unmount VFS partitions on close

There is no shutdown procedure reflecting sysInit,
but filesystems can be unmounted directly before returning
from main()

[EGD-5771] Create post update info window

Add post update info window.

[EGD-5927] Redirect access to '/lib' in emulator

Sanitizer was trying to access libraries after all objects
got deleted and hung in a nested bug state.

[EGD-5898] Fix test send message

Added extra time to send message