diff -r 7de2652f7ee8 -r 2f35c2ae7de8 server/src/main/webapp/WEB-INF/i18n/messages.properties
--- a/server/src/main/webapp/WEB-INF/i18n/messages.properties	Sun May 18 10:31:12 2014 +0200
+++ b/server/src/main/webapp/WEB-INF/i18n/messages.properties	Sun May 25 13:45:24 2014 +0900
@@ -23,6 +23,8 @@
 renkanIndex.project_filter = Filter title
 
 renkanIndex.space_exp = Create a space
+renkanIndex.renkan_title = Title
+renkanIndex.renkan_file = File
 renkanIndex.renkan_spaces = Renkan Spaces
 renkanIndex.renkan_space = Renkan Space
 renkanIndex.space_list = Space list
@@ -35,6 +37,7 @@
 
 
 renkanIndex.js.empty_name_error = Please enter a title
+renkanIndex.js.empty_form_error = Please enter a title or a file
 
 renkanAdmin.renkan_admin = Renkan administration
 renkanAdmin.site_admin = Site administration