Merge pull request #724 from noesya/clean/issue-710

...controllers/admin/research/journals/volumes_controller.rb

app/controllers/admin/research/journals_controller.rb

app/models/communication/website/category.rb

app/models/communication/website/page.rb

app/models/concerns/with_featured_image.rb

app/models/education/program.rb

app/models/research/journal.rb

app/models/research/journal/volume.rb

app/views/admin/application/featured_image/_show.html.erb

app/views/admin/application/featured_image/_static.html.erb

app/views/admin/communication/unsplash/_static.html.erb

...s/admin/communication/websites/categories/static.html.erb

app/views/admin/communication/websites/pages/static.html.erb

app/views/admin/communication/websites/posts/static.html.erb

app/views/admin/education/programs/static.html.erb

app/views/admin/research/journals/_form.html.erb

app/views/admin/research/journals/show.html.erb

app/views/admin/research/journals/static.html.erb

app/views/admin/research/journals/volumes/_form.html.erb

app/views/admin/research/journals/volumes/show.html.erb