Simplify querying relevant video categories for feed

Only categories with live videos should be included in the feed, the
database can do the filtering for us.
Updated videos api.py; use get_resource_uri in CategoryResource
Added some basic test to videos feed.

Created videos fixtures

Added test: Category videos feed

Added test: Speaker and Video feed
Merge pull request #174 from ekaputra07/video-feed-tests

Added some basic test to videos feed.
Clean up pep8 issues in video tests
Add sitenews feed test
Issue #175. Allow videos on category page to be sorted

By default videos on the category page are now sorted by their title.
Users can now choose to order by newest or recently updated.
Issue #74. Added tests for video feeds enclosures

Removed unused import
Revert "Issue #175. Allow videos on category page to be sorted"

This reverts commit 80b9a63937d34f08d621dda9ed41fa663fbb92d4.
Merge pull request #176 from ekaputra07/74-feed-enclosure-tests

Issue #74. Added tests for video feeds enclosures
Update django-browserid requirement
video count display problem in category page

http://pyvideo.org/category/34/chicago-djangonauts
the 1 render next to Date, not videos.
Seems the empty dd after Date is the problem.
If there is no date, no point in "Date:none" so just drop the whole thing.
Show last update date in category page
Add Eduard-Cristian Stefan to AUTHORS
Fix API so speakers don't get extra spaces

NDV keeps pushing data where the speaker name has extra spaces before or
after the name which causes it not to match the equivalent speaker.
E.g. ' Carl' doesn't match 'Carl', so we end up with two Carls in the
db.

This fixes that by stripping the speaker name before the db lookup.
Add version
Add CHANGES and What's New
Update version for v0.1 release
Change version to 0.2.dev
Update install instructions

* adds links to zipfiles
* reduces some of the extra text
* adds a "getting richard" section