PROV-842 Show checkboxes for search tools tab in results

Otherwise the download media search tool mode ‘selected’ wouldn’t make
much sense.
PROV-846 Improve error reporting in OAI provider

This should prevent fatal errors from being thrown if the exporter in
question doesn’t exist :-).
PROV-855 Include storage locations in bundle-level and type-level access control setup screens
Merge branch 'PROV-842' into master-fix
Merge branch 'PROV-846' into master-fix
Merge branch 'PROV-855' into master-fix
NOJIRA remove outdated table reference
PROV-859 Change idno sort option to use idno_sort
PROV-860 Shift context of relationship labels to relationship rather than related item when evaluating template. Also do some cleanup in preparation for PROV-858
NOJIRA Update de_DE translation files
NOJIRA Fix errors in displayHelpers as described in http://www.collectiveaccess.org/support/forum/index.php?p=/discussion/292975/traversing-multiple-relationships-in-a-template#Item_11
NOJIRA Add storage location idno
Merge branch 'master-fix' of github.com:collectiveaccess/providence into master-fix
NOJIRA performance improvement for ElasticSearch when fetching large result sets
PROV-867 Patch hotkeys to leave events for Handsontable; update Handsontable to latest versio
PROV-867 Restore edit links
PROV-867 More hotkeys fixes :-(
NOJIRA Added plugin hook that allows modifying data around the time a new relationship is created.

There was no way to hook into that process before.
Merge branch 'master' of github.com:collectiveaccess/providence into master-fix
Merge branch 'master-fix' of github.com:collectiveaccess/providence into master-fix