Fix the screen invocation in the fabfile.
Fix the screen invocation in the fabfile.

wevoice/wesub,wevoice/wesub,ReachingOut/unisubs,ofer43211/unisubs,pculture/unisubs,ReachingOut/unisubs,ReachingOut/unisubs,ujdhesa/unisubs,ujdhesa/unisubs,norayr/unisubs,norayr/unisubs,eloquence/unisubs,wevoice/wesub,eloquence/unisubs,norayr/unisubs,ujdhesa/unisubs,eloquence/unisubs,pculture/unisubs,pculture/unisubs,ujdhesa/unisubs,ofer43211/unisubs,eloquence/unisubs,ReachingOut/unisubs,ofer43211/unisubs,ofer43211/unisubs,norayr/unisubs,pculture/unisubs,wevoice/wesub