Add View assertion to make sure Fragment is already displaying its views to avoid capturing blank screenshots

Co-authored-by: Ralf Gehrer <ralfgehrer@users.noreply.github.com>

* Downgrade R8 to 2.0.74.

https://issuetracker.google.com/issues/176381203

* Update gradle version in unrelated task.

* Align gradle wrapper task formatting.
(No change, just formatting).

Co-authored-by: Mohamed Metwalli <mohamed.metwalli@sap.com>

* Add state-aware illustrations for Settings>BackgroundModeStatus
Refactor various background mode related functions into a common class that can be injected and observed.

* Rename c to context

* Use core-ktx extension to access system services

* Fix wrong import statement and a typo

* Add more test cases

Co-authored-by: Mohamed Metwalli <mohamed.metwalli@sap.com>

* Fix deadman notification text not being expandable and clean up code.

* Further notification code cleanup.

* Use core-ktx extension to access system services

Co-authored-by: Mohamed Metwalli <mohamed.metwalli@sap.com>
Co-authored-by: Ralf Gehrer <ralfgehrer@users.noreply.github.com>

* Fix icon in settings when bluetooth is disabled.

* Rename c to context

Co-authored-by: Mohamed Metwalli <mohamed.metwalli@sap.com>
Co-authored-by: Ralf Gehrer <ralfgehrer@users.noreply.github.com>

* Fix failed tracing state having the wrong text color for "last update".

* The tracing details box had no visible background in nightmode.

* Fix "Restart" button visibility being reversed on the "Tracing failed" card.

* Code fluff

* Fix "Tracing in progress" switching the color, we need to use the latest, not the latestSuccessful risk state for coloring the progress state.

Co-authored-by: Ralf Gehrer <ralfgehrer@users.noreply.github.com>

Co-authored-by: Ralf Gehrer <ralfgehrer@users.noreply.github.com>

* Let the AppConfig validity check use absolute values, to support device time check behavior.

* Add mapping for "disable-device-time-check" to app config.

* Show popup dialog if the device time is invalid.
* Remove extra retrofit cache (use only LocalAppConfigSource.kt)
* Exposure device time check
* Reset user acknowledgement

* LINTs

* Add test menu option to disable device time check via affecting the config mapping.

* Download, but don't submit keys if device time is incorrect.
Abort risk level calculation if time is incorrect.

* Due to multiple properties in ConfigData affecting `isDeviceTimeCorrect`, make it a body property and don't allow overriding via constructor.

* Add unit test for test settings affecting the device config only in tester builds.

* Show notification regarding incorrect time when device is in the background.

* Fix test regressions and add additional test cases for download and risk task abort conditions on incorrect device time.

* Fix merge regressions.

* Add time unit to log statement.

* Fix incorrect time dialog showing in a loop when entering leaving the home screen.

* Remove unused code path for clear().

* Print additional timestamps to help debugging efforts in the future.

Co-authored-by: Ralf Gehrer <ralfgehrer@users.noreply.github.com>

* Don't log all exposure windows on `RiskLevelTaskResult.toString()` due to performance impact when logging.

* Add RiskLevelResult flow optimized for just getting the latest two results.

* Share risk level result subscriptions.
The delay when switching from Home to RiskDetails fragment will be bridged and no re-loading necessary.

* Fix test regressions

* Remove test code.

* Introduce specific query for "latestAndLastSuccessful".
Add unit tests for SQL queries.

* Fix test regressions due to missing mocking.

* Address merge conflicts.

* Fix instrumentation tests not building.

Co-authored-by: Ralf Gehrer <ralfgehrer@users.noreply.github.com>

* Removed rounded corners from onboarding screen background

* Changed naming of xml

* Changed behavior of placeholder in day screen

* Changed behaviour of placeholder in edit screen

* Changed naming of overview screen list items

* Updated layout of over view list items

* Updated Overview screen list items

* Added dimens

* Updated list item size

* Changed item layout

* Added ripple to list items in overview screen

* Removed scroll bar from overview list

* Linting

* removed unused overview screen list item

* Simplified expressions

* Reformatted contact diary xml files

* Added dimens

* removed unused layout tag

* Update gradlew wrapper and plugin.

* Update binary (via ./gradlew wrapper --gradle-version=6.3 --distribution-type=all)

Adjust layout margins to have a cleaner look (whitespace wise) and prevent cut off text on row items. (#1991)

* adapt colors to match design

* elevation

Co-authored-by: Ralf Gehrer <ralfgehrer@users.noreply.github.com>