make masthead translatable

_data/navigation/en_US.yml

@@ -0,0 +1,21 @@
+# translation urls should be /<locale>/<file> (i.e.: /es_ES/credits)
+# see https://github.com/Plailect/Guide/tree/l10n/_pages for locale codes
+# each language should be separated by a blank line
+
+main:
+  - title: "FAQ"
+    url: /faq
+  - title: "Troubleshooting"
+    url: /troubleshooting
+  - title: "Donations"
+    url: /donations
+  - title: "Credits"
+    url: /credits
+  - title: "Updating A9LH"
+    url: /updating-a9lh
+  - title: "Region Changing"
+    url: /region-changing
+  - title: "NAND Size"
+    url: /nand-size
+  - title: "Site Navigation"
+    url: /site-navigation