Bug 29284: Don't die on analytics searching error

Bug 29284: Don't die on analytics searching error

This patch adds an eval around the call to search for analytic records
It pases a value to the template on the staff side, but logs the warning on
the opac

This seems similar to 'decoding_error' which is noted on staff side, but absent on OPAC

The eval follows the patter used during searching

To test:
1 - Add a title to catalog, with 245a:
    Digger does it all (not really!)
2 - Set searchEngine preference to: Elasticsearch
3 - The record does not load
4 - Apply patch
5 - The record loads, there is a note about analytics at the top fo the record
6 - View record in opac, no note
7 - Check logs on intranet and opac, searching error is logged

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>