Merge remote-tracking branch 'origin/dev' into dev

.../coronawarnapp/ui/information/InformationAboutFragment.kt

.../coronawarnapp/ui/information/InformationLegalFragment.kt

.../de/rki/coronawarnapp/ui/onboarding/OnboardingFragment.kt

...warnapp/util/formatter/FormatterInformationLegalHelper.kt

...rn-App/src/main/res/layout/fragment_information_about.xml

...rn-App/src/main/res/layout/fragment_information_legal.xml

Corona-Warn-App/src/main/res/layout/fragment_onboarding.xml

Corona-Warn-App/src/main/res/layout/include_contact_form.xml

Corona-Warn-App/src/main/res/layout/include_onboarding.xml

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

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