Upgrade to rails 6 💎 (#11)

- upgraded to rails 6
- fixes various issues

config/locales/en.yml

@@ -16,13 +16,21 @@
 #
 # This would use the information in config/locales/es.yml.
 #
+# The following keys must be escaped otherwise they will not be retrieved by
+# the default I18n backend:
+#
+# true, false, on, off, yes, no
+#
+# Instead, surround them with single quotes.
+#
+# en:
+#   'true': 'foo'
+#
 # To learn more, please read the Rails Internationalization guide
-# available at http://guides.rubyonrails.org/i18n.html.
+# available at https://guides.rubyonrails.org/i18n.html.
 
 en:
   hello: "Hello world"
-
-
   messages:
     reset_password_success: Woot! Request for password reset is successful. Check your mail for instructions.
     reset_password_failure: Uh ho! We could not find any user with the specified email.
@@ -33,4 +41,3 @@ en:
       invalid_email: You have entered an invalid email
       email_already_exists: "You have already signed up for an account with %{email}"
       failed: Signup failed
-