[BH-1782] Add brightness fade in

* Added brightness fade in - feature
which allows for gradual frontlight
brightness rise during alarm and
power nap ringing instead of turning
on with full brightness immediately.
* Fixed possibility to close
ringing power nap by long press
of back button.

[MOS-1052] Change VoLTE label from 'beta' to 'experimental'

Changed VoLTE label from 'beta' to
'experimental'.
Fixed transition state label font
size to match the design.

[BH-1688] Create a standard for logs

* Adding document describing how to use logger
* Adjusting logs to follow a new guide
* Change order in log header:
  line number is now before function name

[MOS-1048] Fix not fitting VoLTE button label

Fix of the issue that VoLTE checking
state label was cut off due to
improper setMinimumWidthToFitText()
method behavior when text is placed
in box with rounded corners.

[MOS-552] Fix alarm clock input behavior

Fix of multiple issues that manifested in
input fields of alarm clock, i.e. value
not erasing automatically, redundant
double-zero filling of hours field,
lack of zero-filling of minutes field
when navigating to AM/PM field in
12h mode.

[BH-1690] Add information about the connection to the PC

Added text with information about the connection to the main window
when the USB cable is connected to the PC

[BH-1655] Fix memory leaks in clock faces and shortcuts

Disable libphonenumber initialization since it is not used in Harmony
but takes around 1.4MB of memory

Add heap allocation statistics

[MOS-925] Fix redirection on BACK from sending message from Contact view

Fix for inconsistent redirection to message threads list when pressing
BACK from sending message from Contact view. Also proveded mechanizm
to help switching back to previous App, when some App call window
from another App.

[MOS-202] Add meditation parameters to non-volatile memory

The meditation parameters set by the user will be remembered.

style check fix

[BH-1609] Fix resizing of format in TimeSetFmtSpinner

Change the resizing logic of the children of TimeSetFmtSpinner.
Remove arguments of TimeSetFmtSpinner and BellStatusClock ctors.

[MOS-592] Fix right arrow behavior in search field

Fix of the issue that clicking right arrow
in search field caused the focus to be moved
to image on the right, what made inputting
text impossible.
Additionally minor code cleanup.

[MOS-000] Rebase fixes

Rebase fixes

[BH-1612] Show battery 100% on 24h vert. face with date

Decrease space between colon and digits in TimeSetSpinner for smaller
fonts.
Decrease main vertical time width.
Use battery icon with smaller width.
Decrease space between battery icon and percentage.

[BH-1598] Add clock faces with dates

Add classic and vertical face with dates for both 12h and 24h format.

Fix centering of battery indicator when level is smaller than 100%.

Fix incorrect time format of the alarm in clock face settings.

Change placement of battery and time format indicators on
ClassicWithAmPm screen while charging.

[BH-1594] Add shortcuts instruction

Shortcuts instruction is a new functionality
during the Onboarding process. It shows hints
on how to use buttons.

[MOS-791] Introduce tri-state switch widget

Introduced the new logic.

From now on, every button can be tri-state, that is,
OFF/ON/Transiting whereas the Transiting state is
marked with the 'cheking...' caption written on the
button.

[MOS-791] Introduce tri-state switch widget

Refactored the code so that it's prepared for the new logic.

[BH-1557] Change Harmony home screen font to bigger one

Fix AM/PM font on one of the home screens, change it to normal size/

Fix type of FontInfo members representing spacings, chane them to signed
integers.

[BH-1542] Stabilize the clock position

Added leading zero when displaying
1-digit number.

[MOS-666] Fix disappearing setting bars in German

Fix of the issue that with German language
selected manual volume setting bar and
vibration volume setting bar would
disappear when focused.