Reader tap zones

public/locales/en.json

@@ -404,12 +404,15 @@
       "load_in_progress": "Still loading required data…",
       "loading": "Loading…",
       "logged_in": "Logged in",
+      "menu": "Menu",
       "never": "Never",
+      "next": "Next",
       "none": "None",
       "open_in_browser": "Open in browser",
       "other": "Other",
       "password": "Password",
       "placeholder": "Placeholder",
+      "previous": "Previous",
       "sort": "Sort",
       "started": "Started",
       "type": "Type",