Version sharing (#465) + optional inclusion of subprojects in the roadmap view (#2666).

Each version of a project can be shared with:
* subprojects
* projects in the project hierarchy: ancestors + descendants (needs versions management permission on the root project)
* projects in the project tree: root project + all its descendants (same as above)
* all projects (can be set by admin users only)

Notes:
* when sharing a version of a private project with others projects, its name will be visible within the other projects
* a project with versions used by non descendant projects can not be archived

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3123 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/versions_controller.rb

@@ -22,14 +22,19 @@ class VersionsController < ApplicationController
   before_filter :authorize
 
   helper :custom_fields
+  helper :projects
   
   def show
   end
   
   def edit
-    if request.post? and @version.update_attributes(params[:version])
-      flash[:notice] = l(:notice_successful_update)
-      redirect_to :controller => 'projects', :action => 'settings', :tab => 'versions', :id => @project
+    if request.post? && params[:version]
+      attributes = params[:version].dup
+      attributes.delete('sharing') unless @version.allowed_sharings.include?(attributes['sharing'])
+      if @version.update_attributes(attributes)
+        flash[:notice] = l(:notice_successful_update)
+        redirect_to :controller => 'projects', :action => 'settings', :tab => 'versions', :id => @project
+      end
     end
   end