Add the accounts page placeholder

This proves out that my navigation works the way that I want and that my
auto context variables are working. Currently we don't do much but say
they have no accounts, but we can build that up over time

vanth/pages/accounts.py

@@ -0,0 +1,8 @@
+import flask
+
+blueprint = flask.Blueprint('accounts', __name__)
+
+@blueprint.route('/accounts/')
+def accounts():
+    my_accounts = []
+    return flask.render_template('accounts.html', accounts=my_accounts)

vanth/server.py

@@ -5,6 +5,7 @@ import flask_login
 import flask_uuid
 
 import vanth.auth
+import vanth.pages.accounts
 import vanth.pages.index
 
 LOGGER = logging.getLogger(__name__)
@@ -29,6 +30,7 @@ def create_app(config):
         SESSION_COOKIE_DOMAIN     = config.session_cookie_domain,
     )
 
+    app.register_blueprint(vanth.pages.accounts.blueprint)
     app.register_blueprint(vanth.pages.index.blueprint)
     app.register_blueprint(vanth.auth.blueprint)