Add option for access token login (#58)

* Fix SSO login flow, redirect is done after auth

* Add accessToken login

* Add confirmation for session destroy on accessToken logout

* add translations, fix tests, minor renaming

* update readme

src/i18n/index.d.ts

@@ -11,6 +11,14 @@ interface SynapseTranslationMessages extends TranslationMessages {
       protocol_error: string;
       url_error: string;
       sso_sign_in: string;
+      credentials: string;
+      access_token: string;
+      logout_acces_token_dialog: {
+        title: string;
+        content: string;
+        confirm: string;
+        cancel: string;
+      };
     };
     users: {
       invalid_user_id: string;