validateMigrations gives nonsensical output when table version is higher than in migrations

[jsynacek]

Consider this:

<at this point, table1 is freshly created -- tblVersion is 1>
...
let tables = [ table1 { tblVersion = 10, <change some fields> } ]
let migrations = [ migration1 { fromVersion = 1, ...}, migration2 { fromVersion = 2, ...} ]   
...
migrateDatabase defaultExtrasOptions ["pgcrypto"] [] [] tables migrations
checkDatabase defaultExtrasOptions [] [] tables

When such migration is run, the output looks like this:

22-04-13 08:18:45 ATTENTION hpqtypes-extras-test: Migrations are invalid {
  "expected_migration_versions": [
    8,
    9
  ],
  "migration_versions": [
    1,
    2
  ],
  "table": "bank"
}

That doesn't make any sense. Expected version should be [0..9] or similar. In fact, maybe the error message should be reworked so that it doesn't just blatantly dump two lists but provides a more user-friendly error.

[jsynacek]

Maybe we could do something along the lines of 2d99d9a.