Update web.py

In Admin view page, Editor UI Configuration - Default Settings for New Users - Default Language, set up the new user's default language is not effective. I changed this web.py, add a line of code in 1248 lines in register function. Creating the new user need to take the default language.

cps/web.py

@@ -1245,6 +1245,7 @@ def register():
             password = generate_random_password()
             content.password = generate_password_hash(password)
             content.role = config.config_default_role
+            content.locale = config.config_default_locale
             content.sidebar_view = config.config_default_show
             try:
                 ub.session.add(content)