Use set names in more locations

app/controllers/companies_controller.rb

app/controllers/course_editions/projects_controller.rb

app/controllers/generic_projects_controller.rb

app/views/companies/index.html.erb

app/views/companies/modals/_modal_join_company.html.erb

app/views/dashboards/show/_courses.html.erb

app/views/dashboards/show/_groups.html.erb

app/views/dashboards/show/_organizations.html.erb

app/views/dashboards/show/_projects.html.erb

app/views/dashboards/show/_student_groups.html.erb

app/views/generic_projects/_form.html.erb

app/views/offerers/show/_projects.html.erb