allow adding photos to the public signing material release

config/locales/en.yml

@@ -590,6 +590,7 @@ en:
         heading: 1 of 3 Material Details
       photos:
         heading: 4 of 4 Photos
+        dropzone_label: Tap to take a photo of Licensed Material (optional)
       signer_details:
         heading: 2 of 4 Licensor/Owner Details
     index:
@@ -815,6 +816,8 @@ en:
           heading: Release Information
         signature:
           heading: Sign Below
+        photo:
+          heading: Photos
     talent_releases:
       create: 
         notice: Your release has been signed. Thank you!

config/locales/es.yml

@@ -175,6 +175,10 @@ es:
       show:
         choose_project: ¿Qué proyecto de la lista de abajo asistirá?
         welcome_html: Bienvenidos a la plataforma de firma autorizaciónes de <strong>%{name}</strong>
+    material_releases:
+      new:
+        photo:
+          heading: Photos (ES)
   shared:
     print: Print (ES)
   talent_releases:
@@ -182,3 +186,7 @@ es:
       photos:
         guardian_photo:
           heading: Guardian Photo (ES)
+  material_releases:
+    form:
+      photos:
+        dropzone_label: Tap to take a photo of Licensed Material (optional)