Merge pull request #48 from moztw/master

Update Thunderbird's system requirement page
Merge pull request #52 from moztw/master

Update the production site
Merge pull request #54 from moztw/master

Add GATC for translate and irclog sites.
Merge pull request #55 from moztw/master

Modify AB Test code
Merge branch 'master' into production
Add TB 17.0.5
Merge branch 'master' into production

Conflicts:
	htdocs/thunderbird/releases/17.0.5/index.shtml
	htdocs/thunderbird/releases/index.shtml
Merge pull request #59 from moztw/master

re-structure events for contribute-2
Merge branch 'master' into production
Merge branch 'master' into production
Merge pull request #69 from moztw/master

Merge master to production
Merge pull request #70 from moztw/master

Merge master to production
Merge remote-tracking branch 'origin/master' into production
Merge branch 'refs/heads/master' into production
Merge branch 'refs/heads/master' into production
Merge remote-tracking branch 'origin/master' into production
Merge pull request #78 from moztw/master

Update irc logbot status detection page
Merge remote-tracking branch 'origin/master' into production
Merge branch 'refs/heads/master' into production
Merge remote-tracking branch 'origin/master' into production