Correct german form: 99-66

This creates a blockquote-element, which is styled globally with 
specific quotes and alignment.

Images are always inline and scaled down to the font size of the text 
element as a whole.

TipTap for the newest beta features and jasmine because of some 
dependency error npm was showing.

Outline may be shown when valid dropLists are highlighted. The bottom 
patr of the outline is cut off when the whole width is used by the 
dropList.

Section was picking up the size of children elements. With relative it 
works.

The inline style makes problems with fixed sized elements in dynamic 
sections.

This change needs to be reviewed thoroughly.

This allows elements in dynamic sections to have fixed dimensions.

Some modifications to property panel logic, to show dimension fields and
proper labels.

Only implmented in dropList and button elements.

The child elements are created directly in the component when reading a 
serialized cloze.

The whole parsing process of cloze elements will be reworked soon. So 
this probably is a temporary fix.

Fix a problem when saving compound children

see https://github.com/iqb-berlin/verona-data-specifications/blob/main/responses/manual_iqb-standard.md

The entire HTML is no longer saved, but only the indices and the color
of the markers

- Use the same default state for interactiveMuteControl
and for playerProps.interactiveMuteControl

Use a suffix button to activate color picker instead of having an extra 
form field.

Also add direct input for likert line coloring color.

Options still had a margin-top, which is wrong when there is no label 
above.

Fix typo

The theme file is now project specific because Angular demands assets
to be part of the project.
It also differs in content: The editor theme is only applied to canvas
elements. For the player every checkbox and radio button is affected.

The components now again use the default color of 'accent'. The custom
theme now has the green as accent color and no longer primary.

Used in checkboxes and radio buttons, which are now green.
The secondary is unused but for safety set to the same as the default
theme should be.

This new setting makes child items space around in a row with line 
break.

Images in vertical alignment now always reserve the whole row and don't 
appear next to each other.

- Rename NumbersKeyboardComponent to MathKeyboardComponent
- Decrease the number of input properties
- Split source code into private methods

Use unit field of UnitService directly to detect changes.

- Ignore blank pages when calculating the response progress

- Replace onClick method with an event emitter inside the template