[EGD-6064] Add connecting and pairing bluetooth states

Pairing and connecting states are now visualized
in All devices window to inform phone user what is happening.

[EGD-6452] Sound selection GUI

Sound selection GUI used to change ringtone, message sound and
notification sound in settings.

[EGD-6505] Implement “On when active” Keypad light functionality

Implement “On when active” Keypad light functionality

[EGD-6347] Refactored phone modes handling in applications

PhoneModeObserver doesn't work properly in applications.
Applications have to handle the phone mode changes via AppMgr.
Phone mode and tethering handlers separated.

[EGD-6311] Audio settings windows

Added windows for phone call, messages, calendar and alarm clock
vibration and audio settings.

[EGD-4734] Add PIN settings window

This window displays switch button for
disabling/enabling pin code for sim card.
Its also starting point for changing pin code.
Added actions for enabling and disabling
pin code for sim card.
Added method for checking if pin code is
set for sim card.

[EGD-6268] Add SAR info window

Window contains detailed information about SAR and certification.

[EGD-6262] Refactor Quotes

- Connect QuotesMainWindow to work with agent,
- Use DatabaseModel in Quotes and Categories models,
- Connect add/edit/remove quotes with agent

[EGD-6263] Add  automatic linear brightness

Linear automatic backlight controller - part1

[EGD-6264] About Your Pure Main Window

Add window About Your Pure to help display Technical Information,
Certification and SAR.

[EGD-5902] Phone Modes Windows

Windows for phone modes created.
Offline:FightMode/messages only ServiceCellularApi created.
ConnectionFrequency and DND options settings throught AppSettings.

[EGD-5933] Display Category Selection Window

This window is needed to assist the user selecting the quotes
categories to display.

[EGD-5936] Add Edit Quotes Window

This window is needed by the user to assist the user in editing quotes
or/and selecting the quotes categories to display.

[EGD-6014] Fix top bar includes

This is only clean up of includes, no functional changes

[EGD-5771] Create post update info window

Add post update info window.

[EGD-5204] Secure USB communication

Secure all endpoints by returning 403(Forbidden) when USB is connected.
Request screen passcode to enable secured endpoints.

[EGD-5737] Merge master into experimental

Synchronize with master before merging

[EGD-2631] Create window for entering connection code

Create only window.
Business logic will be added later.

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master