Notify user about new RS authorizations

app/views/notification_mailer/remotestorage_auth_created.text.erb

@@ -0,0 +1,23 @@
+Hi <%= @user.display_name.presence || @user.cn %>,
+
+You have just granted '<%= @auth.client_id %>' access to your Kosmos Storage, with the following permissions:
+
+<% @permissions.each do |p| %>
+* <%= p %>
+<% end %>
+
+Visit your Storage dashboard to check on your connected apps and revoke permissions anytime:
+
+<%= services_storage_url %>
+
+Have fun!
+
+---
+
+You can disable email notifications for new app authorizations in your account settings:
+<%= setting_path(:remotestorage) %>
+
+<% if Setting.discourse_enabled %>
+If you have any questions, please visit our community forums:
+<%= Setting.discourse_public_url %>
+<% end %>