update article enhancers for Gaia and Sanda and Woo
add article enhancer for NerfNow
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
fallback to using the feed link if an item doesn't specificy a link
fix unit tests
[tx-robot] updated from transifex
Merge pull request #460 from owncloud/fallback-url

fallback to using the feed link if an item doesn't specificy a link
[tx-robot] updated from transifex
[tx-robot] updated from transifex
fallback to feed url if simplepie doesnt fetch a permanent link
Merge pull request #466 from owncloud/fallback-url-feed

fallback to feed url if simplepie doesnt fetch a permanent link
[tx-robot] updated from transifex