Merge pull request #522 from linlingyu/dev

[Change] 修改ajax使用baidu.id.key为baidu.key
Merge pull request #523 from linlingyu/dev

[Change] 修改Uglifyjs为2.2.3版本
Merge pull request #524 from linlingyu/dev

[Feature] 将Deferred中的when拆分出来
[Change] 体积优化