Update docs/languages/en/modules/zend.db.table-gateway.rst

Added imports to the example of the GlobalAdapterFeature.
Fixed some indenting.
added google cloud messaging introduction and quick start
Update docs/languages/es/user-guide/database-and-models.rst
Deleted articles that are not exists in the English documentation
translate Zend\Db\Adapter
Restore some of used files

Restore zend.pdf.*, zend.search.*, zend.service.*
Rename restored files: remove dot after 'zend'
Translate Zend\\Db\\Metadata
Add En-Revision
Translate Zend\Db\ResultSet
Translate Zend\\Db\\RowGateway
Fix line length
Translate Zend\\Db\\Sql
grammar mistakes corrected
Translate Zend\\Db\\TableGateway
Update docs/languages/en/modules/zend.authentication.adapter.ldap.rst

I believe that addFilter is part of the $writer not the $logger.  With the example, I get the following error:

Fatal error: Call to undefined method Zend\Log\Logger::addFilter()

Also, it seems the parameters have been reversed for $logger->log() with priority now first.  With the example, I get the following error:

Zend\Log\Exception\InvalidArgumentException
$priority must be an integer > 0 and < 8; received 'Ldap: message'
fixed missing characters
changed the order of the words
fixed missing character
Fixed style remarks and typos
Fixed style remarks and typos