Add pseudo-dimension columns

[ktk]

There is this problem that there are columns in the input file which are bound to one specific column which is a key of the dataset. In UBD66 this is the SitePlot one. Currently this is simply shown as the unique key for this column.

After talking to BAFU I had to add the remaining columns in a way that we can query them as well. For that I did two things:

• SitePlot is now a skos:Concept and it points to additional "pseudo-dimensions" via skos:narrower. Each of this dimensions is again a skos:Concept and contains a skos:prefLabel.
• Each pseudo-dimension is also its own skos:Concept and to this definition I attached a qb:order so we can figure out which one should be shown first.

Example:

• http://environment.data.admin.ch/ubd/66/siteplot/31_1 - points to all the skos:narrower
• http://environment.data.admin.ch/ubd/66/altitude/770 - points to the class Altitude
• http://environment.data.admin.ch/ubd/66/qb/Altitude - class which contains the qb:order

I hope the idea is clear, if not please let me know.