Merge pull request #186 from hongoctrien/develop

Update module menu
Merge pull request #188 from hongoctrien/develop

Style menu vertical for responsive
change css for install
Change style css for sub menu
Merge pull request #189 from volong1012/develop

Change style css for sub menu
Merge pull request #26 from nukeviet/develop

Update code from nukeviet (02/04/2014)