Merge branch 'master' into stable

[EGD-4580] Add BT settings middleware

Added bluetooth settings middleware to store BT status in settings.
Added middleware layer to handle new settings queries.

[EGD-4739] Add empty APN settings window

APN settings window without APN list.
Icon widget now accepts rich text.

[EGD-5166] Add query-callback synchronization mechanism

Receiver object cancels the callbacks at the end of its lifecycle.

[EGD-4591] Change input language parser to load from files

Completely independent input language files and display language files.
Input language files are now loaded based on number of files in
"profiles" folder.
InputLanguageSettings window now shows input languages based on their
"filetype" value andfiles in "profiles" folder.

[EGD-4737] Add VoLTE ON/OFF switch in Settings Network window

Add VoLTE ON/OFF switch in Settings Network window

[EGD-4927] Change new filesystem

Due to vfs deprecation there is need to remove all vfs calls from code. This PR covers module apps.

[EGD-4992] Add main Security screen

This commit implement only main Security screen.
Change passcode functionality will be implemented
in [EGD-4995].

[EGD-4869] Add bluetooth message status to application settings

This change demonstrates how to work with Bluetooth messages
in application settings windows.
Responses to bluetooth status messages are mocked because
settings storage and message handlers in Service Bluetooth
are not ready yet.

[EGD-4732] "All Operators" menu option is shown when "Operator auto-select" is off; the state is kept in db
[EGD-4732] Network menu items visibility / indentation

[EGD-4925] Change new filesystem handling implementation in module-gui. (#1193)

Due to vfs deprecation there is need to remove all vfs calls from code. This PR covers module gui. There are some modifications in other modules included which are necessary because of build system issues.

[EGD-3995] setup sim window prepared basing on the old settings (#913)

[EGD-3995] updated to new settings
[EGD-3995] sim switch using CellularServiceApi

Merge branch 'master' into stable

[EGD-4276] Add nightshift window - GUI (#1153)

[EGD-4276] Add time widget

[EGD-4276] Remove 24h mode, and add bottom bar temporary mode handling

[EGD-4276] Add get/set time methods to time widget class

[EGD-4276] Change tm to std::chrono

[EGD-4276] Cleanup and connect Nightshift window

[EGD-4276] Update changelog

Merge branch 'master' into stable

[EGD-4150] Change filename i18 to i18n (#1108)

Change filename of internationalization files from i18 to i18n.

I18n should stand for internationalization, not i18. That's why I changed in 'module-utils' name of the folder 'i18' and both .cpp and .hpp files to 'i18n'.

[EGD-4167] Add n display languages loaded from files (#1047)

[EGD-4153] Use actions instead explicit applications switch. (#1032)

Revert "[EGD-3572] SettingsTable exchanged to Settings::Settings (#968)" (#1035)

This reverts commit f11bc1f0d0120c04ee6f826f75c9e8a9f5894602.

Co-authored-by: Hubert Chrzaniuk <hubert.chrzaniuk@mudita.com>

[EGD-3572] SettingsTable exchanged to Settings::Settings (#968)

[EGD-3572] Application has an instance of Settings - removed from derived apps
[EGD-3572] review issues resolved
[EGD-3572] shared_ptr -> unique_ptr
[EGD-3572] Primary Key for settings_tab:path
[EGD-3572] empty values handling