- Split text field and drop list, so they can have differing props
- Improve their dimension default values
- Improve alignment of all cloze children components
- Add dynamic width parameter of toggle buttons to dimension properties
panel. Therefore the postion tab can always be shown and no longer needs
a condition.

Remove unused property alternativeKeyboard

The span element created by using rich text via innerHTML makes the 
click listener not trigger. Making the innerHTML 'click through' solves 
the issue.

#244

This should fix CI pipeline.

Build and deploy script are written in bash for now as the syntax is
far easier and cleaner. Might be changed in the future as this requires
a Linux environment with bash available.

Deployment happens as version 9.9.9, because Teststudio does not accept
players and editors without semantic versioning.

The Dockerfile is the image used for building and deploying the app.

Remove unused class.

Prevent double emitting of event when value and status are changed

Use "display:none" instead of "*ngIf" to hide the section and make sure
its children are loaded.

- remove TODO

Exceptions
- BACKSPACE, RETURN, SPACE (like iPad)

- Remove TODOS

elementModels are described in the unitDefinition
elementCodes are saved in the unitState

Their values are mapped by the ElementModelElementCodeMappingService

for type text and image

- Rename class name, methods and properties
- Remove method registerDropListValueIds
- Calculate array of DragNDropValueObjects in app component

Use the mapper method `toUnitState` of the UnitStateElementMapperService
when registering elements and their initial values