Merge pull request #73 from heyongjian/master

huangming:merge the main branch to native branch.
fix bug: issue-27, the icon bg settings has no effect.

remove the icon bg settings item.
Merge pull request #142 from whuthm/master

fix bug: issue-27, the icon bg settings has no effect.
Merge pull request #141 from lwanghaol/master

wanghao:fix bug issue-26,crash when hide all apps
Fix bug:issue-5,sometimes restart launcher the indicator can be in error positions.
Merge pull request #48 from heyongjian/master

merge pull request