Merge pull request #70 from heyongjian/ios-style

Ios style
Merge pull request #72 from heyongjian/ios-style

Ios style
fix bug: issue-14, when an app on top of another , the folder bg is cutted

modify the hotseat padding.
Merge pull request #136 from whuthm/ios-style

fix bug: issue-14, when an app on top of another , the folder bg is cutted。