[EGD-5204] Show passcode screen only when PC is connected

USBConfigured event is not fired when powerbank, charger is connected.

[EGD-5204] Show passcode screen only when PC is connected

USBConfigured event is not fired when powerbank, charger is connected.

[EGD-5204] Secure USB communication

Secure all endpoints by returning 403(Forbidden) when USB is connected.
Request screen passcode to enable secured endpoints.

[EGD-5737] Merge master into experimental

Synchronize with master before merging

[EGD-5740] Change cellular message handlers

Phone modes dependent message handlig is moved to separated
handlers.

[EGD-3685] Vibra handling

Added driver & business logic. Responds to messages.

[EGD-5701] Added DOM dump to harness

* Added generic handler to developerMode
* Added DOM message handling

[EGD-4625] Fix update timeout timer

Moved timer handling to Service Desktop
Use message comm. to update timer state

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[EGD-5737] Merge master into experimental

Keep experimental up to date with changes from master

[EGD-4797] Battery bar as widget

Battery bar now is present as
a separate widget in top bar.
Additionally refactored passing
battery status.

[EGD-5382] Add LowPower CpuSentinels

In order to synchronize the Low Power mode, the services were
immediately informed about the frequency change,
so that they can update their resources (e.g. PWM filling)
and services may request the maximum CPU frequency in order
to perform a task (e.g. screen redraw, telephone conversation)

[EGD-5381] Add Low Power Drivers

Peripherals clock synchronization dependent on PLL2

[EGD-5390] Add keypad backlight to GUI

Added demo connection to keypad light
GUI window.

Merge branch 'master' into stable

[EDG-4717] Add screen for brightness control

Window for manual and automatic screen brightness control.

Merge commit 'c7dd6b399' into stable

Merge branch 'master' into stable

[EGD-2501] Add gsm powerdown due to battery

Gsm model power state maintenance based on battery level.