[EGD-5814] Fix battery revert

Revert of temporary fix
for old battery operation

[EGD-5902] Phone Modes Windows

Windows for phone modes created.
Offline:FightMode/messages only ServiceCellularApi created.
ConnectionFrequency and DND options settings throught AppSettings.

[EGD-5512] Usb security refactor and devices pairing

Move all security related functionality to single security endpoint
Paired devices can be added to avoid further passcode requests

[EGD-5758] Restore auto locking timer in ApplicationManager

Restore auto-locking functionality

[EGD-5995] Settings entry path parser fixed

Fixed: get value from setting when creating cache
Fixed: path parsing
Fixed: request settings value from db
Fixed: sql init script

[EGD-5771] Create post update info window

Add post update info window.

[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-5448] Add EULA window

Added EULA window required for onBoarding procedure.
Onboarding settings added.

[EGD-5810] Fix for old batteries

Temporary fix for old batteries

[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-5014] Add eMMC block device API

Add PureOS wrapper for eMMC driver with support
for basic block device operations.

[EGD-5028] Add batt critical level db

Battery critical level sotred in
database.

[EGD-5673] Settings and FileIndexer initialize

Modified query for settings to insert default values to db.
Removed nonascii characters from file_indexer.

[EGD-5311] Create Date&Time main window

- add DateAndTimeSettings class and
  dateAndTimeSettings global var
  (cache for storing date and time related settings),
- add DateAndTimeChangeRequest messages and proper
  methods in app::manager::Controller for sending them,
- handle DateAndTimeChangeRequest messages in ApplicationManager,
- add SettingRightItem::Text case for OptionSettings
  to provide possibility to add text
  on the right side of particular option,
- rename fields in db (settings_tab table):
  gs_time_format_12 to gs_time_format
  and
  gs_time_date_format to gs_date_format
- create only main Date&Time window.
  Sub windows will be added in separate task.

[EGD-5519] Lockscreen does not ask for pin after reset solved

Name of parameter for lockscreen mode on/off updated in sql script.
Register on param lockscreen only reacts on value change.

[EGD-4831] Add license headers to c, h and sql files

Add license headers to `h`, `c` and `sql` files as this files haven't
been checked previously, script now to automatically updates current
year in existing licenses.

Merge branch 'master' into stable