Merge pull request #1181 from noesya/contributions-total

app/controllers/server/universities_controller.rb

app/models/university.rb

app/models/university/with_invoice.rb

app/views/server/universities/_form.html.erb

app/views/server/universities/index.html.erb

app/views/server/universities/show.html.erb

config/locales/university/en.yml

config/locales/university/fr.yml

db/migrate/20230722054450_turn_invoice_amount_to_float.rb

db/schema.rb

test/fixtures/universities.yml