Restores plugin assets mirroring on startup, but it can now be disabled in configuration.yml.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9561 e93f8b46-1217-0410-a6f0-8f06a7374b81

config/configuration.yml.example

@@ -148,6 +148,12 @@ default:
   # * encrypt data using 'rake db:encrypt RAILS_ENV=production'
   database_cipher_key:
 
+  # Set this to false to disable plugins' assets mirroring on startup.
+  # You can use `rake redmine:plugins:assets` to manually mirror assets
+  # to public/plugin_assets when you install/upgrade a Redmine plugin.
+  #
+  #mirror_plugins_assets_on_startup: false
+
 # specific configuration options for production environment
 # that overrides the default ones
 production: