issues counter are now live updated on creation/deleteion/reopening

buttons on forms are disabled on submit (re-enabled after the request is complete)

app/views/issues/index.html.haml

@@ -2,7 +2,7 @@
 .issues_content
   %h3.page_title
     Issues
-    %small (#{@issues.total_count})
+    %small (<span class=issue_counter>#{@issues.total_count}</span>)
     .right
       .span5
         - if can? current_user, :write_issue, @project
@@ -45,4 +45,4 @@
 :javascript
   $(function(){
     issuesPage();
-  })
+  })