This service is unused for a long time.

Now the paragraphs are shown actually below each other and not next to.

#699

For automatic numbering of droplist items another node level 
(div-element) was introduced to the element DOM. Therefore this 
functions needs to look another node further up for it's position.

#694

- Image
- Hotspot-Image
- Audio
- Video
- Geometry
- DragNDropValueObject (imgFileName, audioFileName)
- LikertRowElement (imgFileName, audioFileName)

Just ignore the color in the component.

- editor and player have their own services to handle the errors

- remove 'own' as possible connection

- to allow the display properties to be overwritten

- remove 'none'

Also refactor a lot of stuff around the page canvas and unit view.

#684

Also add separate file to handle drop-logic.

#671

All created IDs are now always registered as well.

#691

- Due to the width of the scrollbar, text areas change their inner width
under Chromium when the scrollbar is displayed. The use of offsetWidth
instead of contentRect ignores the presence of the scrollbar. The
calculation is therefore less accurate, but sufficient for estimating
the number of rows

#664