Merge pull request #599 from noesya/feature/previous_links

app/models/communication/website/category.rb

app/models/communication/website/git_file.rb

app/models/communication/website/page.rb

app/models/communication/website/page/with_kind.rb

app/models/communication/website/permalink.rb

app/models/communication/website/permalink/administrator.rb

app/models/communication/website/permalink/author.rb

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

app/models/communication/website/permalink/diploma.rb

app/models/communication/website/permalink/organization.rb

app/models/communication/website/permalink/page.rb

app/models/communication/website/permalink/person.rb

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

app/models/communication/website/permalink/researcher.rb

app/models/communication/website/permalink/teacher.rb

app/models/communication/website/post.rb

app/models/communication/website/with_dependencies.rb

app/models/communication/website/with_special_pages.rb

app/models/concerns/with_permalink.rb

app/models/university/person.rb