GitLab

91 add qr code validation in walk mode

Closes #91

See merge request !71

89 use questions in infobox to validate a checkpoint

Closes #89

See merge request !70

Updated Flutter and packages

See merge request !69

69 send encrypt data with the server

See merge request !68

# Conflicts:
#	lib/course/course.dart
#	lib/course/course_presenter.dart
#	lib/course/device/gps_tracker_service.dart
#	lib/course/sport_course_view.dart
#	lib/course/walk_course_view.dart
#	lib/history/history_item_view.dart
#	lib/result/result.dart
#	lib/result/track/abstract_track_view.dart
#	lib/result/track/slider/slider_thumb_shape.dart
#	lib/result/track/track_animation_view.dart
#	lib/server/output_server.dart
#	lib/utils/translations.dart
#	test/course/course_controller/course_presenter_test.mocks.dart
#	test/course/course_presenter_test.mocks.dart
#	test/course/validation_forcing/gps_control_point_validation_forcing_handler_test.mocks.dart
#	test/course/validation_forcing/qrcode_control_point_validation_forcing_handler_test.mocks.dart
#	test/result/elevation_gain_calculation_test.dart
#	test/result/result_test.dart