Refactored code to use new camelCase Api

frontend/src/api.ts

frontend/src/components/CorrectionStatistics.vue

frontend/src/components/DataExport.vue

frontend/src/components/PasswordChangeDialog.vue

frontend/src/components/SubmissionType.vue

frontend/src/components/feedback_list/FeedbackTable.vue

frontend/src/components/mixins/mixins.js

frontend/src/components/student/ExamInformation.vue

frontend/src/components/student/SubmissionList.vue

frontend/src/components/student_list/StudentList.vue

frontend/src/components/student_list/StudentListMenu.vue

.../src/components/submission_notes/SubmissionCorrection.vue

.../src/components/submission_notes/base/FeedbackComment.vue

...ssion_notes/toolbars/AnnotatedSubmissionBottomToolbar.vue

...tend/src/components/subscriptions/SubscriptionForList.vue

frontend/src/components/tutor_list/TutorList.vue

frontend/src/models.ts

frontend/src/pages/student/StudentLayout.vue

frontend/src/pages/student/StudentSubmissionPage.vue

frontend/src/store/getters.ts