Log mail delivery errors to database and add an UI for it

app/views/admin/mail_delivery_status/_maildeliverystatus.html.haml

@@ -0,0 +1,26 @@
+- if MailDeliveryStatus.count > 20
+  = items_per_page
+= pagination_links_remote @maildeliverystatus
+%table.table.table-striped
+  %thead
+    %tr
+      %th= heading_helper MailDeliveryStatus, :created_at
+      %th= heading_helper MailDeliveryStatus, :email
+      %th= heading_helper MailDeliveryStatus, :message
+      %th= t 'ui.actions'
+  %tbody
+    - for maildeliverystatus in @maildeliverystatus
+      %tr{:class => cycle('even','odd', :name => 'groups')}
+        %td= format_time maildeliverystatus.created_at
+        %td
+          - if user = maildeliverystatus.user
+            = link_to maildeliverystatus.email, [:admin, user]
+          - else
+            = maildeliverystatus.email
+        %td
+          - if maildeliverystatus.attachment_data
+            = link_to maildeliverystatus.message, [:admin, maildeliverystatus]
+          - else
+            = maildeliverystatus.message
+        %td
+          = link_to t('ui.delete'), [:admin, maildeliverystatus], :method => :delete, class: 'btn btn-mini btn-danger'

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

@@ -0,0 +1,7 @@
+- title t('.title')
+
+- content_for :actionbar do
+  = link_to t('.destroy_all'), admin_mail_delivery_status_index_path, :method => :delete, class: 'btn btn-danger'
+
+#maildeliverystatus
+  = render "maildeliverystatus"

app/views/admin/mail_delivery_status/index.js.haml

@@ -0,0 +1 @@
+$('#maildeliverystatus').html('#{escape_javascript(render("maildeliverystatus"))}');

app/views/admin/users/_users.html.haml

@@ -17,7 +17,10 @@
         %td= link_to show_user(user), [:admin, user]
         - if FoodsoftConfig[:use_nick]
           %td= user.name
-        %td= user.email
+        %td
+          = user.email
+          - if user.mail_delivery_status.any?
+            = link_to t('.show_email_problems'), admin_mail_delivery_status_index_path(email: user.email), class: 'btn btn-warning btn-mini'
         %td= format_roles(user, true)
         %td= format_time(user.last_activity)
         %td= link_to t('ui.edit'), edit_admin_user_path(user), class: 'btn btn-mini'

app/views/admin/users/show.html.haml

@@ -12,7 +12,10 @@
         %dt= heading_helper User, :name
         %dd= h @user.name
         %dt= heading_helper User, :email
-        %dd= @user.email
+        %dd
+          = @user.email
+          - if @user.mail_delivery_status.any?
+            = link_to t('.show_email_problems'), admin_mail_delivery_status_index_path(email: @user.email), class: 'btn btn-warning btn-mini'
         %dt= heading_helper User, :phone
         %dd= @user.phone
         %dt= heading_helper User, :last_login