Missing default value

[piotrooo]

Hi,

there's missing default value for shops.created_at in the Postgres migration sql. In MySQL is set default value.

This causing problem (App:108):

ERROR:  null value in column "created_at" violates not-null constraint
DETAIL:  Failing row contains (1, null, a7924e93afa1ed21af28c92e71432b0f5d473382, https://devshop-82678.shoparena.pl, 2, null, t).
STATEMENT:  INSERT INTO shops (shop, shop_url, version, installed) values ($1,$2,$3,TRUE)

Another examples:

• access_tokens.created_at
• billings.created_at