Added fallback message if image url is invalid (#1149)

Co-authored-by: Jesus Federico <jesus@123it.ca>

app/views/shared/_header.html.erb

@@ -17,7 +17,11 @@
   <div class="container">
     <div class="d-flex">
       <%= link_to (current_user ? home_page : root_path), class: "header-brand" do %>
-        <%= image_tag(logo_image, class: "header-brand-img", alt:"") %>
+        <% begin %>
+          <%= image_tag(logo_image, class: "header-brand-img", alt:"") %>
+        <% rescue %>
+          <%= t("administrator.site_settings.branding.invalid") %>
+        <% end %>
       <% end %>
 
       <div class="d-flex ml-auto">

config/locales/en.yml

@@ -42,6 +42,7 @@ en:
         info: Change the branding image that appears in the top left corner
         placeholder: Image Url...
         title: Branding Image
+        invalid: Invalid URL
       cache:
         info: Clears the stored provider cache which forces a new request for the updated info
         title: Clear Provider Cache