slug on education program, and research articles, volumes & researchers

app/controllers/admin/education/programs_controller.rb

...controllers/admin/research/journal/articles_controller.rb

app/controllers/admin/research/journal/volumes_controller.rb

app/controllers/admin/research/researchers_controller.rb

app/models/education/program.rb

app/models/research/journal/article.rb

app/models/research/journal/volume.rb

app/models/research/researcher.rb

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

app/views/admin/research/journal/articles/_form.html.erb

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

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

...211209144737_add_slug_to_education_and_research_models.rb

db/schema.rb

lib/tasks/app.rake