Fixed failing tests.

Tests were failing, if initial_data.json was loaded in syncdb.
test_home_page now tests context, instead of content, because of
differences in url paths.
Changed PageContent tests, to support existing data in the db.
Removed test for home page, that slipped into test_resources.py.
Changed Dynamic_Section in views.py, to use filter, instead of get.
Fetchs  the most recent result now, using count().

Added <p>'s to announcement model, on clean.