Add Ledger support to roadmap achievements.

+ Corrections after test
+ localized en,fr,it,pl

_data/lang/en/roadmap.yml

@@ -95,6 +95,9 @@
     - name: Getmonero.org Localization in French and Polish
       date: 2018-04-24
       status: completed
+    - name: Ledger Hardware Wallets Support
+      date: 2018-06-04
+      status: completed
     - name: Forum Funding System redesign
       date:
       status: ongoing

_data/lang/es/roadmap.yml

@@ -95,6 +95,9 @@
     - name: Getmonero.org Localization in French and Polish
       date: 2018-04-24
       status: completed
+    - name: Ledger Hardware Wallets Support
+      date: 2018-06-04
+      status: completed
     - name: Forum Funding System redesign
       date:
       status: ongoing

_data/lang/fr/roadmap.yml

@@ -95,6 +95,9 @@
     - name: Traduction du site getmonero.org en Français et Polonais
       date: 2018-04-24
       status: completed
+    - name: Support des portefeuilles matériel Ledger
+      date: 2018-06-04
+      status: completed
     - name: Refonte du Forum Funding System (FFS)
       date:
       status: ongoing

_data/lang/it/roadmap.yml

@@ -95,6 +95,9 @@
     - name: Getmonero.org Localization in French and Polish
       date: 2018-04-24
       status: completed
+    - name: Supporto per hardware wallet Ledger
+      date: 2018-06-04
+      status: completed
     - name: Redesign del Forum Funding System
       date:
       status: ongoing

_data/lang/pl/roadmap.yml

@@ -95,6 +95,9 @@
     - name: Lokalizacja strony Getmonero.org na język francuski i polski.
       date: 2018-04-24
       status: completed
+    - name: Support dla portfeli Ledger Hardware
+      date: 2018-06-04
+      status: completed
     - name: Zmiana wyglądu Forumowego Systemu Finansowania
       date:
       status: ongoing

_data/lang/template/roadmap.yml

@@ -95,6 +95,9 @@
     - name: Getmonero.org Localization in French and Polish
       date: 2018-04-24
       status: completed
+    - name: Ledger Hardware Wallets Support
+      date: 2018-06-04
+      status: completed
     - name: Forum Funding System redesign
       date:
       status: ongoing