Get rid of broken PHPUnit bootstrapping code

This code itself might not be broken, but it is not working as SMW is currently
relying on to much MW evilness.

This commit makes the phpunit config usable by the MediaWiki PHPUnit test runner.

Change-Id: I839a1fa169bca279ed72d42cf35ceb7c147149db
Have TravisCI use the SMW PHPUnit config

Hopefully this will speed up the code coverage report generation

Change-Id: Ief66e54eadbd254193b40f67491e98996fbdb47d
Add @medium tags so tests dont fail when running with strict mode

Change-Id: I13991104c291c3b4a8a2f2f71a0ddb858a2681c3
Only install php-coveralls on TravisCI when it is actually needed

Change-Id: Iec9a6a0a283b8cd2fa05e10521fb15c88a703c72
Merge pull request #2 from SemanticMediaWiki/phpunit

Improve PHPUnit config