Treat Calendar and Gantt pages as separate modules. #6153

This will let the Issue Tracking, Gantt, and Calendar modules be enabled
or disabled as needed.  A database migration will enable the Gantt and
Calendar for all existing projects that have Issue Tracking enabled.

Contributed by Adam Soltys

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4013 e93f8b46-1217-0410-a6f0-8f06a7374b81

config/settings.yml

@@ -150,6 +150,8 @@ default_projects_modules:
   - wiki
   - repository
   - boards
+  - calendar
+  - gantt
 # Role given to a non-admin user who creates a project
 new_project_user_role_id:
   format: int