Add current Sponsor logo to the sponsor edit page

app/views/admin/sponsors/_form.html.haml

@@ -8,6 +8,8 @@
       - if current_user.has_role?(:admin)
         = f.input :level, collection: Sponsor.levels.keys, label_method: :humanize
       = f.input :avatar, as: :file, required: [email protected]?
+      - if @sponsor.avatar?
+        = image_tag(@sponsor.avatar.url, alt: "#{@sponsor.name} logo", class: 'small-image mw-100 mb-4', 'data-test': 'sponsor-logo')
       = f.hidden_field :image_cache
 
       #contacts.card.bg-light.border-info.mb-4.mb-md-0

config/locales/en.yml

@@ -755,7 +755,6 @@ en:
         remote: Only check if the role is fully remote only
         salary: Annual pay before tax, without commas or decimal points
       sponsor:
-        avatar: The avatar is displayed in sponsors and on the event pages.
         accessibility_info: Is the office on the second floor? Is there a lift? How can someone with a handicap get there.
         contacts:
           mailing_list_consent: Adds contact to sponsors mailing list and triggers email enabling contact to self opt-out.

spec/features/admin/manage_sponsor_spec.rb

@@ -63,6 +63,9 @@
         sponsor = Fabricate(:sponsor)
 
         visit edit_admin_sponsor_path(sponsor)
+        puts page.body
+
+        expect(page.find('.small-image')['alt']).to match("#{sponsor.name} logo")
 
         fill_in 'Accessibility information', with: 'This venue is fully accessible to wheelchair users.'
         fill_in 'Description', with: 'This sponsor has great WiFi.'
@@ -75,6 +78,15 @@
         expect(page).to have_content 'Office is located on the third floor.'
       end
     end
+    context 'with existing avatar' do
+      it 'shows the current avatar on the edit page' do
+        sponsor = Fabricate(:sponsor)
+
+        visit edit_admin_sponsor_path(sponsor)
+
+        expect(page.find('*[data-test=sponsor-logo]')['alt']).to match("#{sponsor.name} logo")
+      end
+    end
   end
 
   describe 'adding contact information to a sponsor' do