Bug 15340: Translatability: fix issue with 'or choose' splitted by <strong> tag

Bug 15340: Translatability: fix issue with 'or choose' splitted by <strong> tag

This patch fixes a translatability issue due to <trong> tags.

To verify:
- Make sure that you have some entries in 'Cities and Towns'
  ( Home > Administration > Cities )
- Edit the main address of a patron's details
- Locate field "City", at the right you have the text 'or choose'
  followed by a drop-down ('choose' is bold)
- change language e.g. to German, the text reads 'or auswählen'
  (instead of 'oder auswählen')
- This is due to the <strong> tags around 'choose'

To test:
- Apply patch
- Verify that the <strong> tags around 'choose' are removed in:
    koha-tmpl/intranet-tmpl/prog/en/includes/member-main-address-style-de.inc
    koha-tmpl/intranet-tmpl/prog/en/includes/member-main-address-style-us.inc

Signed-off-by: Frédéric Demians <f.demians@tamil.fr>
  Obvious issue/solution

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit a85fd85545a885e8ebbcc417b7f180baede70304)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
(cherry picked from commit e33bcec68855397ca16f352ff63c85e3789bea36)