Support multiple graphite sources#384

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Dvrede wants to merge 8 commits intoscobal:masterfrom

Dvrede:support-multiple-graphite-sources

Commits on Apr 14, 2016

Commits on Apr 26, 2016

fix FE and BE integration tests graphite
Desistreus
committed

Commits on Apr 29, 2016

Commits on May 2, 2016

remove white space
Desistreus
committed

Commits on May 9, 2016

fix merge conflicts latest up untill pr 338
Desistreus
committed

Commits on May 10, 2016

Updated some of the unit tests
Desistreus
committed