Add plugins information to script/about (#3387).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2766 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/about.rb

@@ -0,0 +1,16 @@
+module Redmine
+  class About
+    def self.print_plugin_info
+      plugins = Redmine::Plugin.registered_plugins
+
+      if !plugins.empty?
+        column_with = plugins.map {|internal_name, plugin| plugin.name.length}.max
+        puts "\nAbout your Redmine plugins"
+
+        plugins.each do |internal_name, plugin|
+          puts sprintf("%-#{column_with}s   %s", plugin.name, plugin.version)
+        end
+      end
+    end
+  end
+end