Bug 16701: (follow-up) improve some changes

Bug 16701: (follow-up) improve some changes

Add missing quote in line 152
Modify title of the page and breadcrumbs section wrong "searchfield" used
should be instead "currency.currency"

To test
-Try to delete the active and used currency, for example, my case
 USD, look that appear USD' with the initial single quote missing in
 message Confirm deletion of currency USD'
-Notice about the breadcrumbs section appear:
     Confirm deletion of currency ''
 Should appear the currency
-Try to delete another currency see the pharese look the same
-Notice about the title in both cases, there is missing the currency name
-Apply follow-up and re-test

Sing-off on followup
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 4f2dba105e45446448f250356b5ec1cb74085dfd)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>