icon for handler of sortable

app/assets/stylesheets/projects.css.scss

@@ -543,3 +543,9 @@ tbody tr:nth-child(2n) td, tbody tr.even td {
 .handle:hover{
   cursor: move;
 }
+
+.handle{
+  width: 12px;
+  height: 12px;
+  padding: 10px;
+}

app/views/issues/_show.html.haml

 %tr{ :id => dom_id(issue), :class => "issue", :url => project_issue_path(@project, issue) }
   %td
-    = image_tag gravatar_icon(issue.assignee.email), :class => ["left", "handle"], :width => 40, :style => "padding:0 5px;"
+    = image_tag "move.png" , :class => [:handle, :left]
+    = image_tag gravatar_icon(issue.assignee.email), :class => "left", :width => 40, :style => "padding:0 5px;"
     = truncate issue.assignee.name, :lenght => 20
   %td ##{issue.id}
   %td= html_escape issue.title

db/migrate/20111015154310_add_position_to_issues.rb

+class AddPositionToIssues < ActiveRecord::Migration
+  def change
+    add_column :issues, :position, :integer, :default => 0
+  end
+end