Add more protected querystring params

These should never be output when rendering URLs: driver, model, filter
Remove legacy framework 3.0 stylesheet imports
Update CSS for channel list to support layout
Cleanup legacy framework markup from controller
Remove date and add CSS class to feed creator markup
Update standard navigation to match currently supported end-points.

This may later be replaced by an app navigation implementation.
Update the layout of the media samples shown on channel list

WARNING: This is known to be inefficient in calculation of media and
plays (many DB calls go into rendering all channels)
Code standards
Add Media model method for rendering formatted play count
Add option validation to FeedList and support ordering by play count
Update layout of the FeedList model
Group by feed id when sorting by play count
Use a select/join to ensure proper relations for all feed sorts

This allows for easier ordering by media play count.
Merge pull request #150 from unl/issue-137

Layouts for 4.0 Channel List