Backend refactor qt#5

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tacaswell wants to merge 10 commits intobackend-refactorfrom

backend-refactor-qt

Commits on Feb 25, 2015

Refactor pass 1. Refactoring Gcf out of specific backend (backend_gtk3.py)
OceanWolf
committed

Commits on Feb 26, 2015

Commits on Feb 28, 2015