Bug 21571: Make ACCTDETAILS translatable

Bug 21571: Make ACCTDETAILS translatable

This patch makes the notice "ACCTDETAILS" translatable.

Test plan:
1. Switch on TranslateNotices and AutoEmailOpacUser
2. Define templates for different languages for ACCTDETAILS
3. Create a new patron, define an email address, userid and password.
Also pick a different "preferred language" then the default value
4. You should receive the email with the correct, translated, email.

Signed-off-by: Hugo Agud <hagud@orex.es>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>