InChi key and number and PubChem code

[ldesousa]

• Expands code-lists CSV with columns for InChi key, InChi number and PubChem code;
• Updates transformer tool to generate predicates for these columns with the DBPedia ontology:
  • dbo:inchi
  • dbo:pubchem
  • dbpprop:inchikey
• Transformer tool now instantiates physio-chemical properties with DBPedia classes:
  • dbo:ChemicalCompound
  • dbo:ChemicalSubstance
• Updates transformer tool to generate CSV with InChi and PubChem columns;
• Corrects naming of Sulphate, Bromide and Bromite properties.

[ldesousa]

To fix the conflicts:

• revert changes to codelists/glosis_cl.csv
• update the CSV used in the examples, with the one containing the long descriptions
• make sure the new TTL contains the long descriptions
• check if the new CSV-to-TTL query is the cause of issue #111