Move translation for statistic component

src/assets/i18n/creator/de.json

@@ -57,6 +57,7 @@
     "create-session": "Session erstellen"
   },
   "statistic": {
+    "content": "Frage",
     "learning-status": "Lernstand",
     "total": "Total",
     "percentage": "Prozent",

src/assets/i18n/creator/en.json

@@ -56,6 +56,7 @@
     "create-session": "Create session"
   },
   "statistic": {
+    "content": "Content,
     "learning-status": "Learning status",
     "total": "Total",
     "percentage": "Percentage",

src/assets/i18n/participant/de.json

@@ -27,6 +27,7 @@
     "your-answer": "Ihre Antwort"
   },
   "statistic": {
+    "content": "Frage",
     "learning-status": "Lernstand",
     "total": "Total",
     "percentage": "Prozent",

src/assets/i18n/participant/en.json

@@ -27,6 +27,7 @@
     "your-answer": "Your answer"
   },
   "statistic": {
+    "content": "Content",
     "learning-status": "Learning status",
     "total": "Total",
     "percentage": "Percentage",