add signature legal text field

spec/features/user_managing_material_releases_spec.rb

@@ -84,6 +84,13 @@ feature "User managing material releases" do
       click_button submit_release_button
       expect(page).to have_content success_submit_message
     end
+
+    scenario "creating a release, if contract template contains signature legal language, it is shown" do
+      contract_template = create(:contract_template, project: project, signature_legal_text: dummy_signature_legal_text)
+      visit new_account_project_contract_template_material_release_path(project.account, project, contract_template)
+
+      expect(page).to have_content dummy_signature_legal_text
+    end
   end
 
   context "when signed in" do
@@ -382,4 +389,8 @@ feature "User managing material releases" do
     click_button submit_release_button
     expect(page).not_to have_content success_submit_message
   end
+
+  def dummy_signature_legal_text
+    'Some signature legal language'
+  end
 end