Changed filename for billing reports
Changed filename for billing reports

Now that it's easy to select multiple teams, joining them all together
won't work.  It makes the filenames too long.

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