Make occlusion editor make occlusions update in place

[hgiesel]

This would require two special divs:

• The template must have a div with id="closetOcclusionContainer, for the first insertion.
• Into this, we would then insert another div, containing all occlusions with id="closetOcclusionOcclusions"

[hgiesel]

I will use a different approach, see #41.