[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.

[EGD-5090] Add Brownout GUI window

Gui window will appear due to brownout
event. System shutdown will be also called.

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.

[EGD-4740] Add New/Edit APN window - Part1

Add New/Edit APN window - basic window/ model/ widget

[EGD-5250] Change time format on home screen and status bar

This commit changes time format displayed on home screen 
and on status bar by adding new locale for 12H format, 
which excludes am/pm suffix.
The new locale is set as new default format for time string.

Minor: Grammar typo fixed.

[EGD-5288] Add Main system window

In settings add “System” window with all main menu items
(items are just menu positions not connected to actual windows)

[EDG-4743] Add new/options windows to quotes

Add windows for add/edit/delete quotes, use ListView for quote display.

Merge branch 'master' into stable

[EGD-4995] Add changing passcode windows flow

Implement changing passcode windows flow

Merge commit 'c7dd6b399' into stable

[EGD-5087] Update Options and replace PageLayout with ListView

PageLayout removed and replaced with ListView.
Options structure and namespace cleanup.
Added ListView ScrollBar type and disable on
construction.

Merge branch 'master' into stable

[EGD-2501] Add gsm powerdown due to battery

Gsm model power state maintenance based on battery level.

[EGD-4739] Add empty APN settings window

APN settings window without APN list.
Icon widget now accepts rich text.