Add support for multiple fallback languages (fallback waterfall)#345

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xob wants to merge 2 commits intorubenv:masterfrom

Commits on Nov 20, 2017

Add support for multiple fallback languages (fallback waterfall)
Olivier Bellemare
committed

Commits on Nov 28, 2017

Ensure no references are kept to the original objects, and that internal fallback object is never modified when translating
Olivier Bellemare
committed