Merge branch 'master' into 266-add-statistics-page-for-absences

.../alsijil/frontend/components/coursebook/CoursebookDay.vue

...ijil/frontend/components/coursebook/CoursebookFilters.vue

...sijil/frontend/components/coursebook/CoursebookLoader.vue

.../components/coursebook/absences/AbsenceCreationDialog.vue

...nd/components/coursebook/absences/AbsenceCreationForm.vue

...components/coursebook/absences/AbsenceCreationSummary.vue

...d/components/coursebook/absences/ManageStudentsDialog.vue

.../components/coursebook/absences/ManageStudentsTrigger.vue

...nd/components/coursebook/absences/absenceCreation.graphql

...omponents/coursebook/absences/participationStatus.graphql

...alsijil/frontend/components/coursebook/coursebook.graphql

...components/coursebook/documentation/LessonInformation.vue

...ntend/components/coursebook/documentation/LessonNotes.vue

...onents/coursebook/documentation/documentationPartMixin.js

.../frontend/components/coursebook/statistics/MockPerson.vue

...mponents/coursebook/statistics/StatisticsAbsencesCard.vue

...onents/coursebook/statistics/StatisticsExtraMarksCard.vue

...ponents/coursebook/statistics/StatisticsForPersonCard.vue

...ponents/coursebook/statistics/StatisticsForPersonPage.vue

...nts/coursebook/statistics/StatisticsPersonalNotesList.vue