Thunderbird Beta: Use system language.

Casks/thunderbird-beta-ru.rb

@@ -1,11 +0,0 @@
-cask 'thunderbird-beta-ru' do
-  version '47.0b2'
-  sha256 '66fe6a6369c4fa31b4e3eb84967969e194b24c401050d6a3c89a3876ac2c491b'
-
-  url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=ru"
-  name 'Mozilla Thunderbird'
-  homepage 'https://www.mozilla.org/en-US/thunderbird/all-beta.html'
-  license :mpl
-
-  app 'Thunderbird.app'
-end

Casks/thunderbird-beta-uk.rb

@@ -1,11 +0,0 @@
-cask 'thunderbird-beta-uk' do
-  version '47.0b2'
-  sha256 'aab26ebb9f1d4f16ca77f5f1651d8e739372e11922be916acb314ce25156a38e'
-
-  url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=uk"
-  name 'Mozilla Thunderbird'
-  homepage 'https://www.mozilla.org/en-US/thunderbird/all-beta.html'
-  license :mpl
-
-  app 'Thunderbird.app'
-end

Casks/thunderbird-beta.rb

@@ -1,8 +1,22 @@
 cask 'thunderbird-beta' do
   version '49.0b1'
-  sha256 '7edbe8645f4c14fc9fa40646353db96009b5bfa726179bd655568ff7e172874f'
 
-  url "https://download.mozilla.org/?product=thunderbird-#{version}&os=osx&lang=en-US"
+  language 'en', default: true do
+    sha256 '7edbe8645f4c14fc9fa40646353db96009b5bfa726179bd655568ff7e172874f'
+    'en-US'
+  end
+
+  language 'ru' do
+    sha256 '7fb61dd169418bc832758fb2b5f4c5a0fd033fbd17fb53e8f7e2a0f5301ba557'
+    'ru'
+  end
+
+  language 'uk' do
+    sha256 'e25269f3776be5d46b4b60ff7c683f2694b8285392f1c686d4592015373491df'
+    'uk'
+  end
+
+  url "https://ftp.mozilla.org/pub/thunderbird/releases/#{version}/mac/#{language}/Thunderbird%20#{version}.dmg"
   name 'Mozilla Thunderbird'
   homepage 'https://www.mozilla.org/en-US/thunderbird/all-beta.html'
   license :mpl