Fixes bugs introduced in 0.3.0

[pleerock]

fixes #8762; #8759; #8758; #8757;

[delucca]

@pleerock taking a look at this PR and #8762 I was not able to understand what is the current way to generate migrations. TypeORM's docs are still pointing as if the cli options exists (check this reference).

For example, if I have the following ORM config (prior to 0.3.0):

cli: {
  entitiesDir: './src/common/orm/entities',
  migrationsDir: './migrations'
}

Now, every time I run the migrations command I should run:

yarn typeorm migration:create migrations/MigrationName

Is that correct? It would resolve all entities properly?

[pleerock]

@delucca please check #8810 for the explanations on how to use it.