Fix some translations. Improve style for menu, fix layout in digitals page. Working version.

app/overrides/add_digital_downloads_to_invoice.rb

@@ -2,11 +2,11 @@ Deface::Override.new(:virtual_path => "spree/shared/_order_details",
                      :name => "add_digital_downloads_to_invoice",
                      :insert_bottom => "td[data-hook='order_item_description']",
                      :text => %q{
-<% if order.state == 'complete' and item.variant.digital? %>
+<% if order.payment_state == 'paid' and item.variant.digital? %>
   <%= content_tag(:p, :class => 'download_links') do %>
     <% item.digital_links.each do |digital_link| %>
     <% format = File.extname(digital_link.digital.attachment.path).downcase %>
-      <%= link_to t(:digital_download, :type => t("digital_format#{format}")), digital_url(:host => Spree::Config.get(:site_url), :secret => digital_link.secret), :class => "btn #{format}" %>
+      <%= link_to Spree.t(:digital_download, :type => Spree.t("digital_format#{format}")), digital_url(:host => Spree::Config.get(:site_url), :secret => digital_link.secret), :class => "btn #{format}" %>
     <% end %>
   <% end %>
 <% end %>

app/overrides/add_digital_versions_to_admin_product_tabs.rb

@@ -2,7 +2,7 @@ Deface::Override.new(:virtual_path => "spree/admin/shared/_product_tabs",
                      :name => "add_digital_versions_to_admin_product_tabs",
                      :insert_bottom => "[data-hook='admin_product_tabs'], #admin_product_tabs[data-hook]",
                      :text => "    <li<%== ' class=\"active\"' if current == \"Digital Versions\" %>>
-      <%= link_to t(\"digital_versions\"), admin_product_digitals_path(@product) %>
+      <%= link_to_with_icon 'icon-tasks', Spree.t(:digital_versions), admin_product_digitals_path(@product) %>
     </li>
 ",
                      :disabled => false)

app/overrides/add_reset_digitals_to_admin_orders.rb

@@ -2,6 +2,6 @@ Deface::Override.new(:virtual_path => "spree/admin/shared/_order_tabs",
                      :name => "add_reset_digitals_to_admin_orders",
                      :insert_after => ".sidebar",
                      :text => %q{
-<%= content_tag(:p, button_link_to(t(:reset_downloads), reset_digitals_admin_order_url(@order)), class: 'clear') if @order.digital? or true %>
+<%= content_tag(:p, button_link_to(Spree.t(:reset_downloads), reset_digitals_admin_order_url(@order)), class: 'clear') if @order.digital? or true %>
                       },
                      :disabled => false)