Added the ability to copy a project in the Project Administration panel.

* Added Copy project button.
* Added Project#copy_from to duplicate a project to be modified and saved by the user
* Added a ProjectsController#copy based off the add method
** Used Project#copy_from to create a duplicate project in memory
* Implemented Project#copy to copy data for a project from another and save it.
** Members
** Project level queries
** Project custom fields
* Added a plugin hook for Project#copy.

  #1125  #1556  #886  #309

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2704 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/admin/projects.rhtml

@@ -23,6 +23,7 @@
 	<th><%=l(:field_created_on)%></th>
     <th></th>
     <th></th>
+    <th></th>
   </tr></thead>
   <tbody>
 <% for project in @projects %>
@@ -37,6 +38,9 @@
     <%= link_to(l(:button_unarchive), { :controller => 'projects', :action => 'unarchive', :id => project }, :method => :post, :class => 'icon icon-unlock') if !project.active? && (project.parent.nil? || project.parent.active?) %>
     </small>
   </td>
+  <td align="center" style="width:10%">
+    <%= link_to(l(:button_copy), { :controller => 'projects', :action => 'copy', :id => project }, :class => 'icon icon-copy') %>
+  </td>
   <td align="center" style="width:10%">
     <small><%= link_to(l(:button_delete), { :controller => 'projects', :action => 'destroy', :id => project }, :class => 'icon icon-del') %></small>
   </td>