add ShortOverview
Merge branch 'master' of https://github.com/MediaBrowser/MediaBrowser
Merge pull request #854 from HurricaneHernandez/master

Adjusted Dockerfile to build from official release available on Dropbox.
update translations
Update posteritem.css

Remove right margin on last button icon (fixes unnecessary spillover on hover menu on posters)
Merge pull request #855 from Techywarrior/patch-2

Update posteritem.css
add short overview
Merge branch 'master' of https://github.com/MediaBrowser/MediaBrowser