Revert "Run migrations"

This reverts commit a54886e41d11020e9025987cfd32c4fd0db2a000.
Revert "Fix more duplicates"

This reverts commit 255e6307eea34f04c917c57bf9cb30313dce520a.
Revert "Fix dublicated migration in structure.sql"

This reverts commit 358b8b711c5538061af12c5d7bbe31c286a58334.
Revert "Merge pull request #564 from sharetribe/transaction-model"

This reverts commit 80a009a52cced9ce1b545c581f37d91db7618b1c, reversing
changes made to 7034fb277e3028430077ce37aa36c9f32d368068.