remove FOGBUGZ_PROJECT_ID constant
remove FOGBUGZ_CASE_TITLE constant
remove FOGBUGZ_CASE_TAG constant
remove WikiFeaturesHelper::getFogbugzService method
remove WikiFeaturesHelper::fogbugzService property
WikiFeatures code is now FogBugz free
remove FogbugzTag and FogBugzDiagrams extensions
don't load FogbugzService
remove FogbugzService
remove FogBugzAPIConfig variable
Merge pull request #1280 from Wikia/CE-325-remove-obsolete-fogbugz-code

Ce 325 remove obsolete fogbugz code