cleaned up backend tests a bit by utilizing php superglobals instead of mocking, refs #28
removed unused pdf2 tests, refs #28
clean up
trying to be compatible with new changes in phpunit mocking of native File objects, refs #28
refs #28
updated to latest phpunit and dbunit
avoided mocking of SplFileInfo which cannot be mocked since 5.5.13
Merge branch 'master' into develop