[BH-1749] Fix diacritics in translations

Some texts did not have diacritics in the translations

[MOS-930] Fix for for misunderstanding holes in sms conversations

Not all messages can fit on the current screen in sms conversation windows,
so there may be some holes that might suggest that  there are no more messages
to display. Now, when therea are more SMS to see by scrolling up,
the Old Messages label will indicate this fact.

[MOS-1002] Change USSD code handling to match design

Fixed issues with GUI behaviour on failed
USSD code handling.
Minor code cleanup in several parts of system.

[BH-1733] Add Harmony version information

In the Settings->About section, we will have information
about which version of Harmony the user has.

co-author @Lefucjusz

[CP-1962] Add Harmony color detection

* Added serial number based Harmony color
detection.
* Unified serial number handling for both
products.

[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

[CP-1966] Deleted file which is played does not stop the playback timer

Fixed the timer issue when file was deleted during playback.

[MOS-578] Fix misleading SMS notification text

Display "New message", translated accordingly - in
singular - in case there had been multiple unread
SMS messages and now only one remains unread.

[MOS-933] Added translations for Bluetooth connection status

Ditto

[MOS-000] Cleanup of translation files

Removed unused, duplicated entries
Sorted up jsons

[CP-1852] Too many user files removes default relaxation audio from the list

Changed order in which files in Relaxation are displayed
Added error message when files limit is exceeded

[MOS-636] Added MMI/USSD confirmation

USSD/MMI codes are now confirmed after they are sended.

[MOS-000] Fix duplicated Swedish translations

Remove redundant, duplicated Swedish translations
that have been found by translations checking
script.
Minor fix in Polish translation.

[BH-1654] Change polish meditation summary text

Use gender-neutral version

[MOS-966] Fix day of week abbreviations in Polish

Fixed issue with improperly created
weekdays abbreviations in Polish,
particularly 'Niedziela' (Sunday) that was
shortened to 'Nie', which also means 'No'
(negative response).
Fixed issue with remaining 'Edit' label
in navbar after leaving repetition field
in new alarm window.
Fixed hardcoded 'Custom' string used
as a repetition type text.

[MOS-939] Apply target update scripts

* Removed old UDM-related update scripts that are no longer needed.
* Applied target update script
* Removed unneeded data folder from user partition
* Removed dummy personalization.json

[BH-1639] Add welcome message with charging info

Add new bell welcome window
Add new close reasons
Add new actions
Bump assets version
Remove bold text from welcome message
Remove bold text from onboarding popups

[CP-1836] Lack of error handling for audio playback

Added error handling for incorrect audio formats and corrupted files inside Relaxation app

[MOS-874] Complement French translations

Additionally, deleted an unused translation item from
all languages.

[MOS-190] Add missing translations for EULA

Added missing EULA translations in Spanish.
Adjustment of the amount of share capital.