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
Add keyword to description, re-structure the events.
Merge pull request #59 from moztw/master

re-structure events for contribute-2
Firefox 20.0.1 download link.
Merge branch 'master' into production
Firefox 20.0.1 release notes.
Merge branch 'master' into production
icos2013-html5 first commit

copy /events/app-dev-party
議程及活動簡介
update map
change table head
合併議程標題和簡介
議程、講者用<h3>包起來，簡介用<p>

簡介的 class 是 intro
預計要點開<h3>才會顯示
O3和魏藥的簡介