translation: add German title

bufferoverflow · bufferoverflow · commit 6c10f7ef0b8e · 2015-05-15T14:36:15.000+02:00
diff --git a/manifest.webapp b/manifest.webapp
@@ -15,6 +15,10 @@
   },
   "default_locale": "en",
   "locales": {
+    "de": {
+      "name": "Uhr",
+      "description": "die UHR"
+    },
     "eo": {
       "name": "horloĝo",
       "description": "la HORLOĜO"
