Allow administrators to override legislation translations

Now administrators can override default legislation translations through
the administration panel.

app/helpers/site_customization_helper.rb

@@ -8,6 +8,7 @@ module SiteCustomizationHelper
   end
 
   def information_texts_tabs
-    [:basic, :debates, :community, :proposals, :polls, :layouts, :mailers, :management, :welcome, :machine_learning]
+    [:basic, :debates, :community, :proposals, :polls, :legislation, :layouts, :mailers, :management,
+     :welcome, :machine_learning]
   end
 end

config/locales/en/admin.yml

@@ -762,6 +762,7 @@ en:
           community: "Community"
           proposals: "Proposals"
           polls: "Polls"
+          legislation: "Collaborative legislation"
           layouts: "Layouts"
           machine_learning: "AI / Machine Learning"
           mailers: "Emails"

config/locales/es/admin.yml

@@ -762,6 +762,7 @@ es:
           community: "Comunidad"
           proposals: "Propuestas"
           polls: "Votaciones"
+          legislation: "Legislación colaborativa"
           layouts: "Plantillas"
           machine_learning: "IA / Machine Learning"
           mailers: "Correos"

spec/system/admin/site_customization/information_texts_spec.rb

@@ -27,6 +27,10 @@ describe "Admin custom information texts", :admin do
 
     expect(page).to have_content "Results"
 
+    within("#information-texts-tabs") { click_link "Collaborative legislation" }
+
+    expect(page).to have_content "Help with collaborative legislation"
+
     click_link "Layouts"
     expect(page).to have_content "Accessibility"