Merge branch 'master' into feature/schemer

# Conflicts:
#	projects/common/models/elements/input-elements/checkbox.ts
#	projects/common/models/elements/input-elements/drop-list.ts
#	projects/common/models/elements/input-elements/dropdown.ts
#	projects/common/models/elements/input-elements/radio-button-group.ts
#	projects/common/models/elements/input-elements/slider.ts
#	projects/common/models/elements/text/text.ts
#	projects/editor/src/app/services/unit.service.ts