[Bugfix] Import gettext in account.py

calsocial/account.py

@@ -18,6 +18,7 @@
 """
 
 from flask import Blueprint, abort, current_app, flash, redirect, render_template, session, url_for
+from flask_babelex import gettext as _
 from flask_security import current_user, login_required
 
 from sqlalchemy.orm.exc import NoResultFound