Fix crash if course has no name or error message

src/components/StudyProgramme/MandatoryCourseTable/index.jsx

@@ -13,7 +13,7 @@ const MandatoryCourseTable = ({ studyProgramme, mandatoryCourses, language, dele
   )
 
   const columns = [
-    { key: 'name', title: 'Name', getRowVal: course => course.name[language] },
+    { key: 'name', title: 'Name', getRowVal: course => course.name ? course.name[language] : null }, //eslint-disable-line
     { key: 'code', title: 'Code', getRowVal: course => course.code },
     { key: 'delete', title: 'Delete', getRowVal: course => deleteButton(course.code) }
   ]

src/redux/populationMandatoryCourses.js

@@ -51,8 +51,7 @@ const reducer = (state = { data: [] }, action) => {
       return {
         ...state,
         pending: false,
-        error: true,
-        data: action.response
+        error: true
       }
     case 'ADD_MANDATORY_COURSE_SUCCESS':
       return {