Merge pull request #143 from yin8086/ChineseTrans

Add Chinese translation for 1.4.0
Update contributors list
Update site structure
Documentation
Process bugtraq configuration in markup document rendering
Simplified propose instructions for an existing ticket
Implement user "disabled" flag as an alternative to deleting the account
Prevent <nil> from being stored as a milestone
Externalize some additional strings
Remove Dagger injector from the servlet context instead of nulling it
Restart the response on the empty page if the repository has no commits
Fix Chinese translate strings