Fixed PostgreSQL reverse bug in defining unique/index.

On newer version of PHP/PGSQL the `PgSQLSchemaParser::addIndexes` SQL returns for `indisunique` a real boolean value not 't'.
[Runtime] [Connection] minor simplifications.
[Generator] [Manager] fixed wrong property name in AbstractManager class.
Squashed the commits
Failing test for toArray withColumn

Resolving bug toArray withColumn

Corrected indentation