Update i18n gem to 1.5.3 (#29946).

Patch by Marius BALTEANU.


git-svn-id: http://svn.redmine.org/redmine/trunk@17888 e93f8b46-1217-0410-a6f0-8f06a7374b81

Gemfile

@@ -12,7 +12,7 @@ gem "mimemagic"
 gem "mail", "~> 2.7.1"
 gem "csv", "~> 3.0.1" if RUBY_VERSION < "2.6"
 gem "nokogiri", "~> 1.10.0"
-gem "i18n", "~> 0.7.0"
+gem "i18n", "~> 1.5.3"
 gem "rbpdf", "~> 1.19.6"
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem

config/application.rb

@@ -28,7 +28,9 @@ module RedmineApp
     # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
     # config.i18n.default_locale = :de
 
-    I18n.enforce_available_locales = true
+    config.i18n.enforce_available_locales = true
+    config.i18n.fallbacks = true
+    config.i18n.default_locale = 'en'
 
     # Configure the default encoding used in templates for Ruby 1.9.
     config.encoding = "utf-8"

config/initializers/30-redmine.rb

@@ -1,4 +1,3 @@
-I18n.default_locale = 'en'
 I18n.backend = Redmine::I18n::Backend.new
 # Forces I18n to load available locales from the backend
 I18n.config.available_locales = nil

lib/redmine/i18n.rb

@@ -117,8 +117,9 @@ module Redmine
     # unless :cache => false option is given
     def languages_options(options={})
       options = if options[:cache] == false
+        available_locales = ::I18n.backend.available_locales
         valid_languages.
-          select {|locale| ::I18n.exists?(:general_lang_name, locale)}.
+          select {|locale| available_locales.include?(locale)}.
           map {|lang| [ll(lang.to_s, :general_lang_name), lang.to_s]}.
           sort_by(&:first)
       else