Updated Youtube Flash player to version 3 in Samsung version

Version 2 has been deprecated long ago and does not seem to work
anymore in certain contexts such as on 2011 models or in Chrome.
Version 3 is backward compatible with version 2 and should work well
on actual TV sets (to be confirmed though!)

Note I also changed referenced bootstrap files for testing purpose.

Related bug in Pivotal:
https://www.pivotaltracker.com/story/show/55064228
The type of a list item now has priority over the type of the list

The list may contain mixed content. When that happens, the type of the
list is flagged as "other" and list items only display the title of
the underlying item. Using the type of the item makes the code use
the image, description and appropriate template based on the type
of each item.

Related bug in Pivotal:
https://www.pivotaltracker.com/story/show/55064818
TV/Samsung versions: fixed items with enriched media

A few bug fixes:
- the HTML template for items with mentions was not properly loaded
- the code that handled items with mentions failed to work on items
that did not mention anything, leading to a black screen
- the video was only hidden but not stopped when the user got back
from video playback in an item that mentioned a video.

Related bugs in Pivotal:
https://www.pivotaltracker.com/story/show/55064722
https://www.pivotaltracker.com/story/show/55064818
Lists displayed items more than once

Due to the latest update of the framework and to an unfortunate
collision between the DynamicContainer class and the List class,
items in a list were rendered twice (save the first one).

The bug occurred because the List class now listens to "add" events
on the collection (for "fetchMore" purpose) and renders new items
accordingly. The DynamicContainer also listened to "add" events and
typically created the List when it received the first "add" event.
That List was initialized with all the items in the collection but
since it received further "add" events, it thought that new items
were being added to the collection.

Related bug in Pivotal:
https://www.pivotaltracker.com/story/show/55094146
HTML templates and styles for detail views updated not to use "#"

When the underlying list contains mixed content, the ID set to the
<body> tag cannot be used to determine the type of the item that is
being rendered. The type is now explicitly set in the root div of
each template and styles have been updated accordingly.

Related bug in Pivotal:
https://www.pivotaltracker.com/story/show/55139044