[BH-1563] Date UX improvements

Switched to YYYY/MM/DD format.

[MOS-709] Added Polish translation to calendar

Added Polish translation to
a calendar title.

[BH-1550] Medstats translations

Updated meditation statistics translations.

[MOS-685] Make small improvements in various places of the code

- Forward arguments
- Remove unused code
- Remove auto return type when it's not needed
- Add const to member functions
- Use startsWith and endsWith from utils
- Allow instantiation of operators only for specific types
- Caluclate key mask in compile time

[MOS-692] Update slider after tethering is off

When tethering is on we can change the slider position,
however we can't change the slider mode. If we change
the slider position after tethering is off we need to update
the slider mode. Fix typo in Y register.

[MOS-91] Fix cellular DMA errors

Fix "DMA is busy" errors when booting the GSM modem at the stage of
finding the appropriate baudrate.

[BH-1515] Revert bedtime changes

Due to many regressions these changes
introduced, we decided to revert them.

The old PR will be used as a foundation for
another fix attempt(probably including major
refactor of the alarm operations module).

[MOS-662][MOS-301] Fix E-ink shutdown while restoring data

While restoring system data the timer can turn off power of E-ink
to save the power. To avoid this situation we need to power on
the E-ink before wiping out the display. The restore procedure
also performs reversing services list to close. In this case
we do it twice so the order is wrong.

[MOS-74] Fix wrong tethering popup order

Fix for tethering popup when charger is connected

[BH-1543] I want to set a date

*DateSetSpinner and DateSetListItem added (based od TimeSetSpinner and
TimeSetListItem)
*BellSideListItem ctor without title added
*TimeUnitsModel changed to more accurate DateTimeUnitsModel name

[MOS-676] Fix destroying wrong sentinels

If the service is closed the governor removes connected
sentinel. The base iterator refers to the element that is next
in the reversed list. Adding std::next the iterator points to
the correct element.

[MOS-92] Fix continuing music playback after BT disconnection

Fix of the issue that after disconnecting
BT A2DP device during music playback
and reconnecting it without leaving
music player app the sound was not
audible anywhere.
Additionally unified behaviour of music
playback on connection/disconnection
of audio devices.

[MOS-650] Fix spelling mistakes in README

This fixes two spelling mistakes in README: guidelines and kick-start
words.

[MOS-259][MOS-602] Fix no calllog entries in DND mode

Fixed no calllog entries in DND mode, which were caused
by not starting the call in DB interface, so no entry was created.

Moreover, small optimizing of the DND handling.

[MOS-670] Change clang-format AlwaysBreakTemplateDeclarations to Yes

Add --all and --fix-all options to style-check-hook

[MOS-74] Fix wrong tethering popup order

After connecting to PC with locked phone there were pop-ups
of tethering and unlocking the screen in the wrong order.

[MOS-101] Parse MMS notification and show [MMS] in message thread

The `[MMS]` notification is shown in message thread of the correct
number

- Add PDU WAP Push MMS Notification parser
- Use it in ServiceCellular to parse the raw message
- Refactor hexToBytes and bytesToHex utils
- Add endsWith util
- Add unit tests

[BH-1561] Confirmation window's icon alignment

Fixed issue with the icon/text not centered properly.

[MOS-608] Fix crash on phone turn off

Fix of the crash that sometimes happened
during system closing.

[BH-1558] Temperature layouts conf

Enable/disable temperature layouts based on
the global configuration.