fix

app/models/communication/extranet/post.rb

app/models/communication/website/agenda/category.rb

app/models/communication/website/agenda/event.rb

app/models/communication/website/post.rb

app/models/communication/website/post/category.rb

app/models/education/diploma.rb

app/models/education/program.rb

app/models/education/school.rb

app/models/research/hal/publication.rb

app/models/research/journal.rb

app/models/research/journal/paper.rb

app/models/research/journal/paper/kind.rb

app/models/research/journal/volume.rb

app/models/research/laboratory.rb

app/models/university.rb

app/models/university/organization.rb

app/models/university/person.rb