improve some plugins
Merge remote-tracking branch 'origin/develop' into dev
add dialog.js by vabatta
Merge remote-tracking branch 'origin/master' into develop
Merge branch 'develop' of github.com:olton/Metro-UI-CSS into develop
Merge remote-tracking branch 'origin/master' into develop
added z-index to .nav-bar

https://github.com/olton/Metro-UI-CSS/issues/82
Merge pull request #123 from vabatta/master

Release of v0.15.8.12
Merge remote-tracking branch 'origin/master' into develop
Merge branch 'develop' of github.com:olton/Metro-UI-CSS into develop
fix for use icon-* as image in tile