- Explicitly set the value of the form control of CompoundChildren,
because they are not yet fully registered in the onInit phase.
- Use ChangeDetectorRef to prevent
ExpressionChangedAfterItHasBeenCheckedError

The copy is needed to not have cross references between elements.

See 5ff73e14

This reverts commit 93e62a4a.
Teststudio does not accept verona 4 specification data

- Do not check whether pages or sections are valid
- Check the entire form and if necessary the controls

- Check if the selection refers to the content of the text component

- Remove the manipulation of the end offset
- Add the end container of the selection to the list of the selected
nodes if end offset is 0

This dash is a bit shorter.

This a top/99/double quote.

Also reorder the special chars a bit some it looks nicer.

The line-height setting on the before and after selectors are so the 
quote does not reserve space.

This disables the possibility of nested markers

When the user exits selecting between paragraphs, the offset of the
end container is set to 0. In Firefox this always (in Chrome sometimes)
leads to a misinterpretation of the selection. Therefore, the offset
is manipulated.

When the user finishes selecting between paragraphs and the selection
happens from back to front, Firefox does not consider the start
container as a selected child node. Therefore, it is added to the
list of selected nodes at the beginning.

The marking service takes over the conversion to rgb notation, because
in html markup this notation is used for the background color

When a page has longer scrollable dynamic content that consists of many
individual elements (Likert), the content was sometimes not displayed
after interacting with those elements. This happened in the maximized
browser display, especially in Firefox.
Probably due to the deep dynamic nesting the height to be displayed
could not be calculated correctly

Was missing the actual change of the variable.

Define an offset for textarea or textfield during initialization.
This prevents error messages from the linter.

Show warning messages of input fields at event 'NavigationDenied' only
if reason "responsesIncomplete" is sent

- Map value between unit state and element model
- Takes over methods that were previously present in element container
- Gets and holds a list for mapping drop list elements

This makes the list not collapse when used in dynamic context.

Those are wanted by the product owner.

Also improve tooltips.

- Fix reading values from combinedProperties object. This object has the
needed property in its root.
- Don't show alignment buttons in dynamic mode
- Make the small input fields a little wider so the placeholder text
does not overflow, when there is no valid value to show. This may happen
when multiple elements are selected, which have differing values.

- Move the method to the unit service, so the proper 
updateElementProperty method can be used.
- Also improve the logic, reducing variables.

Only select the element component when it is not already selected. This 
prevents delesecting elements which have been multiselected.

This prevents the section from being placed in front of elements
with negative z-index