Merge branch 'dev_robin' into 'main'

app/android/build.gradle

app/lib/certificate.pem

app/lib/main.dart

app/lib/models/profile.dart

app/lib/services/directory.dart

app/lib/services/logout.dart

app/lib/services/secure.dart

app/lib/views/directory_page.dart

app/lib/views/login_page.dart

app/lib/views/profile_page.dart

app/pubspec.lock

app/pubspec.yaml

app/test/directory_page_test.dart

app/test/widget_test.dart

scale-server/app.py

scale-server/config.py

scale-server/database/models.py

scale-server/requirements.txt