database schema upgrade 2.9 is broken on new installs

[JohnVillalovos]

As reported in: #495

After commenting out two ALTER TABLE lines in /database_schema/upgrades/2.9/schema.sql, I can get through the install (the tables pending_reservations and users_customers do not exist, so the ALTER TABLE statements throw an error), I can get through the installation, but cannot register any users.

This change was introduced in #415

@hakito Adding you here in case you have some feedback.

@lukebarone This is related to your issue

[hakito]

You are right. These tables are some extensions made for a customer and therefore shouldn't be in the update script.

I am scared that this wasn't noticed til now.

[lukebarone]

@hakito It's ok, it seems fixed now.

I suggest subscribing to the issues board when you submit pull requests for open source projects so you can keep up on changes