fix member error with blank database

lib/tasks/site.rake

@@ -11,6 +11,9 @@ namespace :site do
     `mongo #{Mongoid.config.database.name} --eval "db.fs.chunks.ensureIndex({files_id: 1, n: 1})"`
     puts  "Congres you can now login within url"
     puts 'Please upload design package (/admin/designs/upload_package ) and run rake site:necessary_data'
+    I18nVariable.create!( :document_class => 'language', :key => 'en', :en => 'English', :zh_tw => '英文' )
+    I18nVariable.create!( :document_class => 'language', :key => 'zh_tw', :en => 'Chinese', :zh_tw => '中文' )
+    
   end
   
   task :necessary_data => :environment do