[MOS-1047] Fix calling abort() in EnterNumberWindow

* Removed call to abort() method in case
EnterNumberWindow's SwitchData handler
receives message that can't be handled,
what caused the phone to crash.
* Unify ApplicationCall window names
definitions.
* Code cleanup.

[MOS-669] Add too hot battery notification when charging

* Added notification showing on the main
screen if the battery has reached too
high temperature to continue charging.
* Code cleanups.

[MOS-1027] Fix lack of tethering icon on 'Tethering is on' popup

Fix of the issue that pressing menu button while
in tethering resulted in LTE and no signal icons
appear on status bar instead of tethering icon.

[BH-1745] Fix a deep press crash during popups

Rewrite the popups filter to remove unnecessary popups.
Remove callbacks from activate and deactivate popups
which cause problems when the popups was on the stack.

[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-1412] Fix services dependencies

Changes in dependecy managment
Replacing state flags with states in ServiceGUI
Unifying some parts of code

[MOS-636] Added MMI/USSD confirmation

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

[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.

[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

[MOS-47] Fixed non closed USSD session

USSD pull session was not closed when USSD popup
was closed by back button. Also USSD code was slightly
refactored.

[MOS-35] Add more input modes for USSD reply

Previously only the mode restricted to digits was available.

[MOS-59] Always display network technology and signal strength

Now those parameters are always on the statusbar

[MOS-807] Unpacking update package

* Added unpacking and validating of
update package
* Removed 'utils-bootconfig'
* Added 'tar' module
* Minor compilation issues fixed

[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-786] Added support for A/B boot codes in OS

Further implementation of A/B booting

[MOS-26] Add tethering info on status bar

When tethering is on, info appears in the status bar
and network coverage indicates "no connection"

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

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

[MOS-499] Improve lock screen power consumption

Power on the e-ink only when it is needed e.g. fast or deep
refresh. Update battery percentage only when discharging.

[MOS-32] RF clears snoozed alarms fix

Fix of the issue that RF button clears
snoozed alarms notifications from desktop.

[MOS-463] Unify cellular namespace

Unified cellular namespace, fixed test buildiing,
removed some unused includes