[O] Provide a more customized welcome message

src/pages/course-selection/course-selection.vue

@@ -3,7 +3,8 @@
         <el-card id="info">
             <div class="header">Course Selection</div>
             <div class="content" v-if="app.user.gradeLevel < 12">
-                This new page is designed to help you with your course selection next year,
+                This new page is designed to help you with your course selection for your
+                <span style="color:#409EFF">{{nextYearGradeLevel}} year</span>,
                 providing more information such as how many people are currently enrolled in a course.
             </div>
             <div class="content" style="color: #ff3d3d" v-if="app.user.gradeLevel >= 12">
@@ -154,6 +155,11 @@
 
             return list;
         }
+
+        get nextYearGradeLevel()
+        {
+            return GPAUtils.gradeLevelName(this.app.user.gradeLevel + 1)
+        }
     }
 </script>