Translate admin (#1702)

* Translate the domain_block panel

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

* Translate PubSubHubbub section

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

* translate account section and correct typos

* move reports translation & translate sidebar

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

* normalize l18n

app/views/admin/pubsubhubbub/index.html.haml

@@ -1,14 +1,14 @@
 - content_for :page_title do
-  PubSubHubbub
+  = t('admin.pubsubhubbub.title')
 
 %table.table
   %thead
     %tr
-      %th Topic
-      %th Callback URL
-      %th Confirmed
-      %th Expires in
-      %th Last delivery
+      %th= t('admin.pubsubhubbub.topic')
+      %th= t('admin.pubsubhubbub.callback_url')
+      %th= t('admin.pubsubhubbub.confirmed')
+      %th= t('admin.pubsubhubbub.expires_in')
+      %th= t('admin.pubsubhubbub.last_delivery')
   %tbody
     - @subscriptions.each do |subscription|
       %tr