Update docs dependency install script for Ubuntu 14.04, also update docs readme to specify Ubuntu 14.04

Features and changes:
* jsonb can be used with: options={"jsonb"=true}
* OVER is no longer reserved
* LATERAL is now reserved

Fixed inconsistent use of getSQLDeclaration method

The current version is not displayed correctly at
http://docs.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/portability.html

* Remove aliases from examples where they make no sense
* Fixed copy paste error

We add the instancename parameter documentation for oci8 driver