Adds a Setting to control how an Issue's done_ratio is calculated:

* Issue field (default) - the done_ratio field for the Issue
* Issue status - uses the Issue Status's value

  #4274

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3151 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/issues/_form_update.rhtml

@@ -4,7 +4,9 @@
 <p><%= f.select :assigned_to_id, (@issue.assignable_users.collect {|m| [m.name, m.id]}), :include_blank => true %></p>
 </div>
 <div class="splitcontentright">
+<% if Issue.use_field_for_done_ratio? %>
 <p><%= f.select :done_ratio, ((0..10).to_a.collect {|r| ["#{r*10} %", r*10] }) %></p>
+<% end %>
 <% unless @issue.assignable_versions.empty? %>
 <p><%= f.select :fixed_version_id, (@issue.assignable_versions.collect {|v| [v.name, v.id]}), :include_blank => true %></p>
 <% end %>