Merge pull request #280 from corona-warn-app/dev

Corona-Warn-App/build.gradle

.../main/java/de/rki/coronawarnapp/http/WebRequestBuilder.kt

...a/de/rki/coronawarnapp/notification/NotificationHelper.kt

...plicationconfiguration/ApplicationConfigurationService.kt

...coronawarnapp/service/diagnosiskey/DiagnosisKeyService.kt

...rki/coronawarnapp/service/submission/SubmissionService.kt

...rc/main/java/de/rki/coronawarnapp/ui/main/MainFragment.kt

...rki/coronawarnapp/ui/submission/SubmissionTanViewModel.kt

...n/java/de/rki/coronawarnapp/ui/submission/TanConstants.kt

.../main/java/de/rki/coronawarnapp/ui/submission/TanInput.kt

...ain/java/de/rki/coronawarnapp/util/CachedKeyFileHolder.kt

...-App/src/main/java/de/rki/coronawarnapp/util/TanHelper.kt

...e/rki/coronawarnapp/util/formatter/FormatterRiskHelper.kt

...coronawarnapp/util/formatter/FormatterSubmissionHelper.kt

Corona-Warn-App/src/main/res/color/card_dark.xml

Corona-Warn-App/src/main/res/drawable/card_dark.xml

...-App/src/main/res/drawable/ic_icon_drilldowncard_dark.xml

Corona-Warn-App/src/main/res/drawable/ic_step_1.xml

Corona-Warn-App/src/main/res/drawable/ic_step_2.xml

Corona-Warn-App/src/main/res/drawable/ic_step_background.xml