Fix conference view to allow images from admin and spec file

app/views/decidim/conferences/conferences/show.html.erb

@@ -20,12 +20,12 @@ edit_link(
   <div class="columns mediumlarge-12">
     <section class="section">
       <h3 class="section-heading"><%= t("conferences.show.introduction", scope: "decidim") %></h3>
-      <%= decidim_sanitize translated_attribute(current_participatory_space.short_description) %>
+      <%= decidim_sanitize_editor_admin translated_attribute(current_participatory_space.short_description) %>
     </section>
     <hr class="reset mt-none mb-m">
     <section class="section">
       <h3 class="section-heading"><%= t("conferences.show.details", scope: "decidim") %></h3>
-      <%= decidim_sanitize translated_attribute(current_participatory_space.description) %>
+      <%= decidim_sanitize_editor_admin translated_attribute(current_participatory_space.description) %>
       <div class="row mt-l mb-l">
         <div class="column medium-9 medium-centered">
           <% if current_participatory_space.registrations_enabled? %>

spec/factories.rb

@@ -3,3 +3,4 @@
 require "decidim/core/test/factories"
 require "decidim/proposals/test/factories"
 require "decidim/decidim_awesome/test/factories"
+require "decidim/conferences/test/factories"

spec/system/conferences_with_image_spec.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+describe "Conference with images", type: :system do
+  let(:organization) { create :organization }
+  let(:short_description) { { en: "<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p><img src=\"/favicon.ico\">" } }
+  let!(:conference) { create :conference, organization: organization, short_description: short_description }
+
+  before do
+    switch_to_host(organization.host)
+    page.visit "/conferences/#{conference.slug}"
+  end
+
+  it "shows the image" do
+    within "#content" do
+      expect(page).to have_xpath("//img[contains(@src,'favicon.ico')]")
+    end
+  end
+end