Updated README to reflect removal of DBaaS support since the old DBaaS API is no longer supported.
Deleted all files for DBaaS classes and tests. Also removed DBaaS from settings.ini.
Made modifications to several tests (primarily IdentityServices and StreamWrapper) in order to get them to pass against slightly newer versions of PHP and PHPUnit.
Modified StreamWrapperFSTest so that it doesn't seg fault when running against newer versions of PHP and PHPUnit.