only render sprint editor field if editable

modules/backlogs/app/views/rb_sprints/_sprint.html.erb

@@ -45,19 +45,21 @@ See docs/COPYRIGHT.rdoc for more details.
     <div class="name <%= editable %>" fieldname="name" field_id="<%= sprint.id %>"><%= sprint.name %></div>
   </div>
 
-  <div class="editors permanent">
-    <%= text_field_tag :effective_date,
-                       sprint.effective_date,
-                       id: "effective_date_#{sprint.id}",
-                       class: '-augmented-datepicker effective_date editor' %>
-    <%= text_field_tag :start_date,
-                       sprint.start_date,
-                       id: "start_date_#{sprint.id}",
-                       class: '-augmented-datepicker effective_date editor' %>
-    <%= text_field_tag :name,
-                       sprint.name,
-                       class: 'name editor' %>
-  </div>
+  <% if User.current.allowed_to?(:update_sprints, @project) %>
+    <div class="editors permanent">
+      <%= text_field_tag :effective_date,
+                         sprint.effective_date,
+                         id: "effective_date_#{sprint.id}",
+                         class: '-augmented-datepicker effective_date editor' %>
+      <%= text_field_tag :start_date,
+                         sprint.start_date,
+                         id: "start_date_#{sprint.id}",
+                         class: '-augmented-datepicker effective_date editor' %>
+      <%= text_field_tag :name,
+                         sprint.name,
+                         class: 'name editor' %>
+    </div>
+  <% end %>
 
   <div class="meta">
     <%= render :partial => "shared/model_errors", :object => sprint.errors %>