fix outdated broken testst
Merge pull request #1337 from alexispeter/Fix-CM_App_InstallationTest

fix outdated broken CM_App_InstallationTest
Merge branch 'master' of github.com:cargomedia/CM into issue-1336

Conflicts:
	tests/library/CM/App/InstallationTest.php
Use mockObject() instead of mockClass()->newInstance(), check method call count after first config