[BH-1443] Lower CPU freq before going to SNVS

Going to SNVS requires usage of periph clock
That reuires further cpu configuration changes
Easiest way is to just change cpu freq to level 2

[MOS-370] Documenation cleanup

This fixes a handful of links and standardizes the remaining links.
Redundant ToC titles were removed in two documents. Hotlinked
images have been added. README.md header image was optimized to a
tenth of the size. Images were moved into doc/Images directory.

[BH-1408] Main alarm stops

Cherry pick of the missing PR.

[BH-1446] RTC Calibration per product

RTC Calibration per product

[MOS-292] Update bluetooth translations

Updated bluetooth pairing popup translations

[MOS-361] Navbar fonts size fix

Fix navbar fonts size regression

[BH-1411] Layouts settings arrows adjustment

Layouts settings arrows adjustment

[BH-1433] Meditation Timer Gong Volume

Chime Volume Model implementation

[CP-1080] Collect contacts notifications in outbox ep

When contact record is created/updated/removed during
connection with Mudita Center, notification of that
action should be collected in outbox endpoint to
keep contacts data synchronized between MuditaOS
and Mudita Center.

[CP-1150] Remove embedded-centerpure from CODEOWNERS

Since only one developer is left in embedded-centerpure group,
there is no sense to keep it in CODEOWNERS.
Now it is not possible to merge some PRs created by that dev,
because it would require approval of embedded-centerpure.

[MOS-333] Energy optimization for the usb stack

Switching USB PLL and USB PHY
for current consumption saving

[CP-1147] Fix restore not working

Fix restore not working with bigger database

[BH-1411] Revert MOS-343 Harmony defined flash size change

This reverts commit 1a2c4e45f593397e539c99efdda3d81a758dde70.
This commit causes inabilty to flash image to Harmony

[MOS-360] Fix battery charger stack overflow

Increasing the stack for battery charger worker

[BH-1440] ServiceDesktop crash during startup

Fixed.

[BH-1438] Bell crash during start

Fixed.

[MOS-288] Split default and fallback fonts to separate entries

And fix emojis display

[MOS-351] Fix db load after update

Workaround for loading changed/new sql
after update.
Currently, updated moves sql files to wrong direction,
therefore to support both update and flashing
we have to check both directories.

[MOS-337] Fix no audio for incoming calls/messages

After the outgoing call was terminated,
the audio was terminated incorrectly,
therefore the next call did not ring.

[MOS-331] Fix audio resuming after headset unplugging

Fix of the audio playback bug, which
prevented playback resuming after
unplugging the headset when playback
was paused.