mozilla/zamboni — pull request #2525 by diox (2014-09-09 17:46:15+00:00)
Title: Fix filtering by region in feed elements with fireplace (bug 1061206)

Fix for http://sentry.dmz.phx1.mozilla.com/marketplace-dev/marketplace-dev/group/20970/

```
mkt.feed.views in _do_app_filter
KeyError: 'regions'

File "rest_framework/views.py", line 396, in dispatch
response = handler(request, *args, **kwargs)
File "mkt/feed/views.py", line 788, in get
data = (self.filter_apps_feed_element(request, dict(data)) or
File "mkt/feed/views.py", line 485, in filter_apps_feed_element
map_field='slug')
File "mkt/feed/views.py", line 533, in _filter
app for app in feed_element['apps'] if _do_app_filter(app)]
File "mkt/feed/views.py", line 518, in _do_app_filter
app[field] = map(lambda x: x[map_field], app[field])
```