Add translations for development log on mdorg

mdorg/de/navigation.json

@@ -23,6 +23,7 @@
         "contact": "Kontakt",
         "privacy": "Datenschutzerkl\u00e4rung",
         "people": "Team",
-        "calendar": "Kalender"
+        "calendar": "Kalender",
+        "development_log": "Development Log"
     }
 }

mdorg/de/software_development_log.json

@@ -0,0 +1,9 @@
+{
+    "tlDevLog": {
+        "pageTitle": "Entwicklungs-Log :: museum-digital",
+        "pageDescription": "Entwicklung von museum-digital",
+        "pageKeywords": "Software, museum-digital, Entwicklung",
+        "status": "Status",
+        "development_log": "Entwicklung von museum-digital"
+    }
+}