refacto : var currency and zone applied

includes/lang/ca.php

@@ -163,7 +163,7 @@ return [
     'fc_main_header'            => 'Calendari Familiar',
     'fc_btn_correct_balances'   => 'Corregir els saldos',
     'fc_btn_school_holidays'    => 'Vacances escolars',
-    'fc_modal_holidays_title'   => 'Vacances Escolars (Zona C)',
+    'fc_modal_holidays_title'   => 'Vacances Escolars',
     'fc_modal_snap_title'       => 'Ajustar un saldo',
     'fc_col_period'             => 'Període',
     'fc_col_from'               => 'Des del',

includes/lang/en.php

@@ -164,7 +164,7 @@ return [
     'fc_main_header'            => 'Family Calendar',
     'fc_btn_correct_balances'   => 'Adjust balances',
     'fc_btn_school_holidays'    => 'School holidays',
-    'fc_modal_holidays_title'   => 'School Holidays (Zone C)',
+    'fc_modal_holidays_title'   => 'School Holidays',
     'fc_modal_snap_title'       => 'Adjust a balance',
     'fc_col_period'             => 'Period',
     'fc_col_from'               => 'From',

includes/lang/fr.php

@@ -163,7 +163,7 @@ return [
     'fc_main_header'            => 'Calendrier Familial',
     'fc_btn_correct_balances'   => 'Corriger les soldes',
     'fc_btn_school_holidays'    => 'Vacances scolaires',
-    'fc_modal_holidays_title'   => 'Vacances Scolaires (Zone C)',
+    'fc_modal_holidays_title'   => 'Vacances Scolaires',
     'fc_modal_snap_title'       => 'Ajuster un solde',
     'fc_col_period'             => 'Période',
     'fc_col_from'               => 'Du',