Fix #532, add system notice

conf/locale/locale_en-US.ini

@@ -416,6 +416,7 @@ organizations = Organizations
 repositories = Repositories
 authentication = Authentications
 config = Configuration
+notices = System Notices
 monitor = Monitoring
 prev = Prev.
 next = Next
@@ -593,6 +594,13 @@ monitor.desc = Description
 monitor.start = Start Time
 monitor.execute_time = Execution Time
 
+notices.system_notice_list = System Notices
+notices.type = Type
+notices.type_1 = Repository
+notices.desc = Description
+notices.op = Op.
+notices.delete_success = System notice has been successfully deleted.
+
 [action]
 create_repo = created repository <a href="%s/%s">%s</a>
 commit_repo = pushed to <a href="%s/%s/src/%s">%s</a> at <a href="%s/%s">%s</a>