Merge pull request #4 from tan9/master

Add/update Chinese (traditional) translation.
Explain performance considerations in javadoc
Merge pull request #5 from jenkinsci/wiki_link

[JENKINS-16437] Link to mail address resolution wiki page
Standardized Git connection URL.
[maven-release-plugin] prepare release mailer-1.5
[maven-release-plugin] prepare for next development iteration