[MOS-973] Fix for a ghost call after quick click back key to end a call

Fixed a scenario where the user click to make a call to some contact and
then quickly click BACK (right function button) to end the call and despite
that Pure was still calling without showing any information.
This fix prevent to handle key press event as a key longpress even after
application lose a focus, or change a state.

[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

[MOS-686] Fixed MTP availability only after phone unlocked

Fixed file access via MTP even when phone is not unlocked.
Now access is granted when the phone is unlocked by the user entering
a passcode. If the phone is not passcode protected (passcode is nor set)
then access to the files is always possible via MTP.

[CP-1974] Deleting all templates leaves some text on pure screen

Additional fix, previous one was not working correctly in all scenarios.

[MOS-975] Fixed missing new message notification

New message notificationis not cleared on locked phone
when phone was locked from thread window.

[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.

[CP-1974] Deleting all templates leaves some text on pure screen

Fixed Template window clearing after all templates are removed.

[CP-1950] Templates menu navigation loop and pagination on pure gets blocked

Fixed problem where the Templates window gets unresponsive for user input
while changes in templates were done via MC

[MOS-980] Match volume popup timeout with phone modes popup

As title describes.

[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-927] Fixed search engine labels

Fixed another regression introduced by the previous PR.

[MOS-969] Unify GUI action after contact adding

Fix of the issue that after adding new contact
window with contact details was shown, whereas
after adding new contact with the same number
as the one already present in another contact,
list of all contacts was shown.
Minor cleanup.

[MOS-942] Fix access to contacts when onboarding in progress

During onboarding, the user could add new contacts
by entering the emergency call screen.

[MOS-178] Add input mode displaying timeout

Added timeout for displaying selected input
mode - now it automatically disappears
after 3 seconds since last change was made.

[MOS-962] Fix forwarded message automatic pasting

Fix of the issue that entering 'Options' menu
after forwarding message caused the content
of the message to be pasted into message
field in thread view.
Minor cleanup.

[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-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-357] Fix backing from new contact window when came there from call log

Ditto

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

The meditation time entered from the keyboard will be remembered.