[EGD-5545] Add PIN2 handling

Possibility of handling PIN2 request from modem.
Description of the message in PinLock what type of
code is required

[EGD-5448] Add EULA window

Added EULA window required for onBoarding procedure.
Onboarding settings added.

[EGD-2631] Create window for entering connection code

Create only window.
Business logic will be added later.

[EGD-5778] Add signal strength dBM inidcator

Refactored signal strength logic and arranged it
as seprated widget.
Added option to display signal strength as dBM or
bar graph.

[EGD-5795] Fix Some MMI data responses  are showing only title

Fix message processing for call waiting data response
Fix message processing for call barring data response

[EGD-5597] Fix messages overflowing length

Current sms length is bound by 7*67 characters. This PR
enforce that limit on ApplicationMessages level.
Additionally PR solve:
 - corner case problem with invalid cursor position in TextBackup
 - EGD-4408 fix of label on desktop menuWindow

[EGD-2931] Fix private number incoming calls

The change adjusts both cellular service as well as
call and call log applications to handle properly
incoming calls from private numbers.

[EGD-3633] Fix new message recipient

Known issues with recipient filed fixed:
- on contact, clearing there was leftover data
- on contact, one could keep adding numbers to visible name
- on contact, to delete it one had to delete each visible name char
- `select` in center button was not restored in some edge cases
- wrong recipient label

[EGD-5707] Add empty Time Zone selection window

Add Empty window for time zone selection. Connection with DB
will be don in separate PR.

[EGD-5295] Fixes in Calllog app

Fixed some Calllog UI issues:
Fixed lack of calllog entry after call aborting

[EGD-5295] Change the date format

Change the date format separator from / to .

[EGD-5398] Added onBoarding application first version

Created first version of onBoarding application. Added welcome
window, configuration start window and adopted language
window. Small Icon GUI refactor. AppManager language copy removed.

[EGD-5619] Add unified implementation of active icons

This PR provides unified and reusable implementation of active
icons used in windows system-wide.

[EGD-4822] Add color test window to settings app

Add new window to allow convenient display and globally
change used color intensities  for design and testing purposes.
Changes were introduced to Renderer as well as GUI service
to allow global change of used color scheme.
When using list, screen is deep refreshed each
time the color is changed.
Known issues:
Item focus borders (top,bottom) with changed black intensity
may not render properly, however it doesn't obscure the
target functionality.

[EGD-5517] Add MMI custom response window

Add MMI custom response windows for:
Call barring
Call waiting
CLIP
CLIR
IMEI

[EGD-5311] Create Date&Time main window

- add DateAndTimeSettings class and
  dateAndTimeSettings global var
  (cache for storing date and time related settings),
- add DateAndTimeChangeRequest messages and proper
  methods in app::manager::Controller for sending them,
- handle DateAndTimeChangeRequest messages in ApplicationManager,
- add SettingRightItem::Text case for OptionSettings
  to provide possibility to add text
  on the right side of particular option,
- rename fields in db (settings_tab table):
  gs_time_format_12 to gs_time_format
  and
  gs_time_date_format to gs_date_format
- create only main Date&Time window.
  Sub windows will be added in separate task.

[EGD-5393] Wrong emergency number window

According to lately added emergency call window
there is need of window that handles invalid number
dial as emergency number.

[EGD-5043] Add emergency call window

According to PurePhone design emergency call
window is needed after "SOS" callback at the screen lock.
This PR introduce implementation of emergency call window
and also refactor in the enter number window. Both windows
derives from new number window.

Merge branch 'master' into stable

[EGD-5338] Add APN options window - gui

This is just GUI, window is not connected yet.
It will facilitate further development of APN settings,
and will be enhanced later.