Archive groups of a person for every personal note to check against it
to decide what data should be displayed in full register print out

Resolve "Better error message if there are no matching lesson periods"

Closes #86

See merge request !63

Resolve "Add support for multiple excuse types"

Closes #66

See merge request !64

Show validity range and school term correctly in full register printout

See merge request !66

Resolve "[Week view] Show only group members"

Closes #80

See merge request !67

Update dependency isort to v5

See merge request !60

Implement school term and validity range, remove photo cropping

See merge request !62

Resolve "Fix personal note filter id_ variable"

Closes #84

See merge request !59

Update copyright information

See merge request !58

Resolve "[Lesson view] Show summary (homework, etc.) of previous lessons"

Closes #29

See merge request !57

Resolve "Use base_print.html for full register print out"

Closes #76

See merge request !55

- Add extra templates for absences and tardinesses
- Add model extensions for lesson documentation and personal notes to LessonPeriod

Fix wrong offsets for weekdays

See merge request !54

Resolve "[Lesson view] Show buttons to go the previous/next lesson"

Closes #83

See merge request !56

Resolve "Show status icon for every lesson"

Closes #63

See merge request !50

Fix lint issues and reformat all files

See merge request !53