Fix PG DbTest::testHaveAndSeeInDatabase

- The test was failing because the value for lastInsertId when
using PG was always 0.
- As per http://www.php.net/manual/en/pdo.lastinsertid.php,
  PDO::lastInsertId for PG requires the sequence name. This fix
  guesses the sequence name based on the table. The test now passes.
Keep method signature the same to remove STRICT warnings
Merge pull request #500 from mohangk/fix_pg_driver3

Keep method signature the same to remove STRICT warnings
Merge pull request #499 from mohangk/fix_pg_driver2

Fix PG DbTest::testHaveAndSeeInDatabase
Fix PG DbTest::testDontSeeInDatabaseWithEmptyTable

- The Postgresql::select command was generating erroneous when the criteria was an empty array
- Updates the postgresql.sql dump to include empty_table
Merge pull request #503 from mohangk/fix_pg_driver

Fix PG DbTest::testDontSeeInDatabaseWithEmptyTable
Fix PG DbTest::testDontSeeInDatabaseWithEmptyTable

- The Postgresql::select command was generating erroneous when the criteria was an empty array
- Updates the postgresql.sql dump to include empty_table
Merge pull request #505 from mohangk/fix_pg_driver

Keep method signatures the same
Return an instance of a class from the IoC Container
Fix sequences delete in PostgreSQL driver
Fix delete sequences in PostgreSQL friver
Merge pull request #512 from itmages/bug/postgreSqlDriverSequencesDelete

Bug/postgre sql driver sequences delete
Merge pull request #509 from allmyitjason/patch-3

Return an instance of a class from the IoC Container
Merge branch '1.6' of github.com:Codeception/Codeception into 1.6
new module Sequence added
version bump
package and docs updated
resume facebook module test
Fix namespace of cept
Merge pull request #529 from piccagliani/fix_namespace_cept

Fix namespace of cept