Added en translation for background dialog (#915)

* Removed lorem ipsum references in translation files

* added location translations for all languages

* added base translations for background dialog

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

@@ -410,13 +410,13 @@
     <!-- XACT: onboarding(tracing) - illustraction description, header image -->
     <string name="onboarding_tracing_illustration_description">"Three people have activated exposure logging on their devices, which will log their encounters with each other."</string>
     <!-- XACT: onboarding(tracing) - dialog about background jobs header text -->
-    <string name="onboarding_background_fetch_dialog_headline">""</string>
+    <string name="onboarding_background_fetch_dialog_headline">"Background Update switched off"</string>
     <!-- YMSI: onboarding(tracing) - dialog about background jobs -->
-    <string name="onboarding_background_fetch_dialog_body">""</string>
+    <string name="onboarding_background_fetch_dialog_body">"You have switched off the background update for Corona-Warn-App. If you do not switch on the background update, you can update your risk status manually. You can always switch on background updates in your system settings. "</string>
     <!-- XBUT: onboarding(tracing) - dialog about background jobs, open device settings -->
-    <string name="onboarding_background_fetch_dialog_button_positive">""</string>
+    <string name="onboarding_background_fetch_dialog_button_positive">"Open Device Settings"</string>
     <!-- XBUT: onboarding(tracing) - dialog about background jobs, continue in app -->
-    <string name="onboarding_background_fetch_dialog_button_negative">""</string>
+    <string name="onboarding_background_fetch_dialog_button_negative">"Start exposure logging manually"</string>
     <!-- XHED: onboarding(tracing) - location explanation for bluetooth headline -->
     <string name="onboarding_tracing_location_headline">"Allow location access"</string>
     <!-- XTXT: onboarding(tracing) - location explanation for bluetooth body text -->