add test for redirected links
use a test server instead of google for the redirect test
Delete child documents via a term query rather than has_parent
Added Welsh as language
Merge pull request #986 from stuartf/issue986

Mark links that redirect to a new domain as non-embeddable
Formatted Shibboleth README so it displays better on GitHub
Added `isPrivate` to the /me feed’s tenant object
tell the travis bot not to join/part the irc channel
Merge pull request #1053 from stuartf/travisIrc

tell the travis bot not to join/part the irc channel
Use the search `resource_memberships` to filter resources by direct access
Only parsing previews if there is a key present
Merge branch '1051-delete-by-query' of https://github.com/simong/Hilary into 1051-delete-by-query
Merge branch 'folder-search' of https://github.com/simong/Hilary into folder-search
Added link to ElasticSearch Terms Lookup filter documentation page
Merge branch 'tenant-is-private' of https://github.com/simong/Hilary into tenant-is-private
remove call to nonexistant callback
log error on failing to get a lock
use redback for locking
Added missing locking documentation
Moved redbac require to the top of the locking file