Make sure data *as is* is fully integrated

[damian-oswald]

Organisation

• ? Use Zefix URIs instead of custom ones.

Product

• Add GHS codes.
• Add product category (including it's taxonomy).
• Add ingredients as blank nodes which themselves point to blank node quantitative values.
• Use a nice URI that includes the federal admission number as the slug.

Indication

• Add application area
• Add cultivations
• Add pests
• Add application comment
• Add obligation (what is this, actually?)
• Add dosage
• Add expenditure
• Add waiting period

GHS codes

• Integrate GHS codes + taxonomy
• Fix the meaning of CodeS. These seem not to be the same as precautionary codes!?