clean-up code

* Remove trailing whitespace
  * Converts hard-tabs into two-space soft-tabs
  * Remove consecutive blank lines

app/views/admin/mailer/preview.html.haml

@@ -1,29 +1,28 @@
 %p This is page with preview for all system emails that are sent to user
-%p Email previews built based on existing Project/Commit/Issue base - so some preview maybe unavailable unless object appear in system  
+%p Email previews built based on existing Project/Commit/Issue base - so some preview maybe unavailable unless object appear in system
 
 #accordion
   %h3
     %a New user
-  %div 
+  %div
     %iframe{ :src=> admin_mailer_preview_user_new_path, :width=>"100%", :height=>"350"}
   %h3
     %a New issue
-  %div 
+  %div
     %iframe{ :src=> admin_mailer_preview_issue_new_path, :width=>"100%", :height=>"350"}
-  %h3 
+  %h3
     %a Commit note
   %div
     %iframe{ :src=> admin_mailer_preview_note_path(:type => "Commit"), :width=>"100%", :height=>"350"}
   %h3
     %a Issue note
-  %div 
+  %div
     %iframe{ :src=> admin_mailer_preview_note_path(:type => "Issue"), :width=>"100%", :height=>"350"}
   %h3
     %a Wall note
-  %div 
+  %div
     %iframe{ :src=> admin_mailer_preview_note_path(:type => "Wall"), :width=>"100%", :height=>"350"}
 
-
-:javascript 
+:javascript
   $(function() {
       $( "#accordion" ).accordion(); });