Bug 900493: enable firefox/new redirect for zh-CN
Bug 892470: enable plugincheck redirect for zh-CN
Merge pull request #1252 from flodolo/zhcn_new

Bug 900493: enable firefox/new redirect for zh-CN
Merge pull request #1253 from flodolo/zhcn_plugincheck

Bug 892470: enable plugincheck redirect for zh-CN