Harden picture descriptions integration spec

The spec makes assumptions about the picture record and
its related objects. Since those have been mutated by the
server process that rspec spawns for feature specs, we need
to reload the records before trying to make any assertions
on the in-memory objects.

(cherry picked from commit faaeaff)

Author: tvdeyen

spec/features/admin/picture_library_integration_spec.rb

@@ -99,6 +99,9 @@
       select(language.language_code.upcase, from: "Language")
       expect(page).to have_field("Description", with: "This is an amazing image.")
 
+      # Make sure we have the latest records before making assumptions
+      picture.descriptions.reload
+
       expect(picture.descriptions.size).to eq(2)
       expect(picture.descriptions.find_by(language: german).text).to eq("Tolles Bild.")
       expect(picture.descriptions.find_by(language: language).text).to eq("This is an amazing image.")