improved texts of feedback, added ok button

config/locales/de.yml

@@ -152,6 +152,9 @@ de:
       submission:
         one: Abgabe
         other: Abgaben
+      user_exercise_feedback:
+        one: Feedback
+        other: Feedback
     errors:
       messages:
         together: 'muss zusammen mit %{attribute} definiert werden'
@@ -525,3 +528,12 @@ de:
     previous_label: '← Vorherige Seite'
   file_template:
     no_template_label: "Leere Datei"
+  user_exercise_feedback:
+    difficulty_easy: "es war zu einfach"
+    difficulty_some_what_easy: "es war etwas zu einfach"
+    difficulty_ok: "es war ok"
+    difficulty_some_what_difficult: "es war etwas zu schwer"
+    difficult_too_difficult: "es war zu schwer"
+    difficulty: "Schwierigkeit der Aufgabe"
+    description: "Wir freuen uns, wenn Sie uns hier Feedback zur Aufgabe zu geben.<br>Bitte beschreiben Sie, was Ihnen an der Aufgabe gefallen hat und was nicht. Gabs Schwierigkeiten bei der Aufgabe? War die Aufgabe zu leicht oder zu schwer?<br>Wir freuen uns über jedes Feedback."
+

config/locales/en.yml

@@ -173,6 +173,9 @@ en:
       submission:
         one: Submission
         other: Submissions
+      user_exercise_feedback:
+        one: Feedback
+        other: Feedback
     errors:
       messages:
         together: 'has to be set along with %{attribute}'
@@ -548,11 +551,10 @@ en:
     no_template_label: "Empty File"
   user_exercise_feedback:
     choose: "choose one"
-    easy: "it was easy"
-    some_what_easy: "it was somewhat easy"
-    some_what_difficult: "it was somewhat difficult"
-    difficult: "difficult"
-    done: "done"
+    difficulty_easy: "it was too easy"
+    difficulty_some_what_easy: "it was somewhat easy"
+    difficulty_ok: "it was just right"
+    difficulty_some_what_difficult: "it was somewhat difficult"
+    difficult_too_difficult: "it was too difficult"
     difficulty: "Difficulty of the exercise"
-    description: "Here you have the chance to comment on the exercise. Feel free to give us feedback on the exercise, the description or difficulty. Did you liked the question or was it too difficult or easy?"
-
+    description: "Here you have the chance to comment on the exercise. Feel free to give us feedback on the exercise, the description or difficulty. Did you liked the question or was it too difficult or easy?"