This element has a list of string as editable options. Those strings 
form draggable elements which may be reordered or moved between 
different DropList elements.

Also refactor option change logic to allow any property not just the 
text property.

This works similarly to the standard radio group, but has a fixed 
horizontal layout with images above the options.

* Change the detection of the parent element to determine whether the
audio/video player is running in the aspect-editor or the aspect-player

* Add magnifier properties to `ImageElement`
* Set used value at `UnitStateService`
* Bypass parsing error of distpacker

Wait until a solution is found for the distpacker when parsing "'url('+ (image.src) + ')'".

Use flex to position image and text below one another. Don't use any 
image scaling setting. Now the images grow but don't shrink.

There were some things missing when renaming questions/answers to 
rows/columns. Now everything is properly named.

* Show current and maximal runs in control bar

This function will be implemented differently.

* Refactor markable text
* Prevent multiple selections (feature is only supported in Firefox)

To not have the same name as likert rows and cause issues on the props 
panel.

The condition did not respect the case of null value.

And avoid global styling.

This way empty paragraphs still produce an empty line.
Not possible to do inline because CSS pseudo classes do not work inline.

This way the color-input element can read the color and show the correct 
preview.

Make radio button and first line of the label (in case there is a line 
break) appear at the same height.

This makes it so that other options appear with strikethrough when one 
is selected.

This allows for further marking options on the text, which may be used 
for different purposes.

Since this is built using a grid it does not need dimensions. In fact it 
having dimensions interferes with styling.

For elements which don't have this functionality the workaround is to 
use pointer events and make the elements unclickable.

* Add IntersectionService
* Add CompoundElementComponent as parent for LikertComponent
* Inject ElementRef to common ElementComponent
* Rename players' ElementComponent to ElementContainerComponent

This improves bold text readability.
This has to be done in the actual element, in the TextEditor and on the 
properties panel.

Add 10px margin between label and options.

When the label is empty a smaller input field will be rendered which 
also does not have the label placeholder.

This has been refactored already. Those were not cleaned up properly.