Merge pull request #1683 from corona-warn-app/fix/merge-17x-into-18x

...rnapp/diagnosiskeys/download/DownloadDiagnosisKeysTask.kt

...ronawarnapp/diagnosiskeys/download/HourPackageSyncTool.kt

...awarnapp/diagnosiskeys/download/KeyPackageSyncSettings.kt

...dules/detectiontracker/DefaultExposureDetectionTracker.kt

...arby/modules/detectiontracker/ExposureDetectionTracker.kt

...p/src/main/java/de/rki/coronawarnapp/storage/LocalData.kt

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

...a/de/rki/coronawarnapp/util/preferences/FlowPreference.kt

...onawarnapp/util/preferences/SharedPreferenceExtensions.kt

...java/de/rki/coronawarnapp/util/security/SecurityHelper.kt

Corona-Warn-App/src/main/res/values-bg/strings.xml

Corona-Warn-App/src/main/res/values-de/strings.xml

Corona-Warn-App/src/main/res/values-en/strings.xml

Corona-Warn-App/src/main/res/values-pl/strings.xml

Corona-Warn-App/src/main/res/values-ro/strings.xml

Corona-Warn-App/src/main/res/values-tr/strings.xml

Corona-Warn-App/src/main/res/values/strings.xml

...warnapp/diagnosiskeys/download/HourPackageSyncToolTest.kt

...c/test/java/testhelpers/preferences/MockFlowPreference.kt

...est/java/testhelpers/preferences/MockSharedPreferences.kt