Add links for sharing, downloading video


git-svn-id: svn://svn.code.sf.net/p/subsonic/code/trunk@4128 104adb81-38d2-4886-885e-82898e39ce25
New video page, show slideshow on hover.

git-svn-id: svn://svn.code.sf.net/p/subsonic/code/trunk@4129 104adb81-38d2-4886-885e-82898e39ce25