Fix i18n key
Minor tweak to really horrible code and a reminder do fix it properly
Merge branch 'master' into virtual_collection_rework
More refactoring of really horrible Solr code.

 - Added test for facet filters and queries
 - Changed from explicit OR queries to implicit ones which rely
   on the default operator, since this cleans up the syntax a lot
Get item count from ngroups rather than matches (fixes #405)
Revert "Add some experimental dir attributes to prompt the browser to detect text direction"

This wasn't ready to go out yet to master.
Merge branch 'master' into virtual_collection_rework
Point child link to the search page rather than a non-existent anchor
Clear message fields after sending a message (fixes #353)
Attempt to tackle more subtle bugs in the search ordering behaviour.

 - Default search ordering fallback is now a separate parameter
   to the find() function, which makes it easier to override
 - The search order isn't added to the search form unless it's actually
   in the parameters
Merge branch 'master' into virtual_collection_rework
Merge branch 'virtual_collection_rework' into merge_guides2