Merge pull request #255 from agbeltran/development

Some improvements w.r.t. URIs
Reinserted a method I should not have removed.
Merge remote-tracking branch 'origin/development' into development
Some changes to make the tool backwards compatible.
Now removes any spaces between comments for consistency.
Adding accession to OntologyTerm
Merge branch 'development' of https://github.com/ISA-tools/ISAcreator into development