Apply bordered form styling to work package forms

Signed-off-by: Alex Coles <alex@alexbcoles.com>

app/views/work_packages/_edit.html.erb

@@ -34,7 +34,7 @@ See doc/COPYRIGHT.rdoc for more details.
                               :html => {
                                         :id => 'work_package-form',
                                         :multipart => true,
-                                        :class => 'form'
+                                        :class => 'form -bordered'
                                        } do |f| %>
 
   <% if defined? back_url %>

app/views/work_packages/new.html.erb

@@ -36,7 +36,7 @@ See doc/COPYRIGHT.rdoc for more details.
                               :url => project_work_packages_path(project),
                               :html => { :multipart => true,
                                          :id => 'work_package-form',
-                                         :class => 'new-work_package-form form' } do |f| %>
+                                         :class => 'new-work_package-form form -bordered' } do |f| %>
 
   <%= error_messages_for :object => work_package %>