[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.

[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.

[CP-1831] Editing contact which is deleted via Center can still be saved but with incomplete data

Fix for editing contact when it was deleted via Center.
Edited contact cannot be saved if it was deleted earlier. Proper communication is shown.
Fix for phonebook app was not handling database notifications correctly.

[MOS-166] Unify grey color levels

Unified gray color levels used for texts
displayed in GUI.
Fixed issue with 'No calls yet.' text
not displaying.

[MOS-901] Missing translation for words "show" and "replace"

Fix for missing translation for words "show" and "replace" in all
languages except for English.

[MOS-77] Notifications on the home screen shouldn't be bolded

Fix for bolded notification text in every language.

[MOS-663] Replacement for empty templates screen

Now there's information displayed that there are no
templates and in order to add some, the user needs
to use Mudita Center. Also, given no templates, the
screen doesn't show the 'USE' button.

[MOS-893] Fix invalid time description in the SMS thread

The sending/receiving time information will be displayed as follows:
- Only an hour –> for today
- Yesterday and hour –> for messages received/sent yesterday
- Day of the week and hour –> for messages received/sent within
last 7 days
- Date (day+month) and hour –> for messages older than week,
but still from the same year
- Date (day+month+year) and hour –> for messages
rom previous years

[CP-1734] Create factory reset reboot UI

Create window that will be shown when the
device turns off first time after factory
reset request made from PureOS.

[MOS-783] First part of new dir structure implementation

    Works:
    - generating .img for Pure;
    - Pure boots after flashing new image and
    seems to be working fine;

    Not yet:
    - generating update package;
    - generating image for Harmony;
    - simulator;
    - path-related unit tests fail
    due to paths being hardcoded
    in test scenarios.

[MOS-27] Fix invisible message text after pasting

Fix of the issue that pasting previously copied
text in new message field on thread screen
resulted in text shown in gray and invisibility
of each subsequently entered character.

Further analysis of this issue shown two
additional bugs in this place in code,
as a result a decision to completely
remove 'Reply' prompt text has been
made. Extended description of these
issues can be found in comment under
MOS-27 Jira ticket.