Changed metadata task to strip out bad chars and ignore non-present columns.
Changed metadata task to strip out bad chars and ignore non-present columns.

mehulkar/paperclip,degica/paperclip,onursarikaya/paperclip,ScotterC/paperclip,cmaion/paperclip,dgynn/paperclip,onursarikaya/paperclip,mrb/paperclip,danielwanja/paperclip,itkin/paperclip,meskyanichi/paperclip,zurb/paperclip,fivepointssolutions/paperclip,bookis/paperclip,fxposter/paperclip,liveminds/paperclip,mdkalish/paperclip,betesh/paperclip,greatbody/paperclip,meskyanichi/paperclip-cloudfiles,peterpunk/metal-paperclip,sideci-sample/sideci-sample-paperclip,maintux/paperclip,pcreux/paperclip,pc-doctor/paperclip,victorngkp/paperclip,dgynn/paperclip,frankpinto/paperclip,sopheak-se/paperclip,tylerwillingham/paperclip,12spokes/paperclip,tooky/paperclip,mehulkar/paperclip,alexandrz/paperclip,soramugi/paperclip,freeslugs/paperclip,keathley/paperclip,cmaion/paperclip,gilabrantes/paperclip,greatbody/paperclip,pandamako/paperclip,gfvcastro/paperclip,bryanl/paperclip,joshisa/paperclip,felipemathies/paperclip,medcat/paperclip,Sporky023/paperclip,ScotterC/paperclip,agcantarelli/paperclip,Leadformance/paperclip,jonathandean/paperclip_tod,InesCARodrigues/paperclip,crowdtap/paperclip,aditya01933/paperclip,hooroo/paperclip,dosire/paperclip,justanshulsharma/paperclip,tylerwillingham/paperclip,justanshulsharma/paperclip,maintux/paperclip,pcorliss/paperclip,rpbaptist/paperclip,manorie/paperclip,sijn/paperclip-fork,joshisa/paperclip,soramugi/paperclip,aditya01933/paperclip,howaboutwe/paperclip,carnivalmobile/paperclip,bdewater/paperclip,felipemathies/paperclip,mrb/paperclip,Flameeyes/paperclip,quadule/paperclip,mrgilman/paperclip,tiegz/paperclip,mrgilman/paperclip,Cohealo/paperclip,crowdtap/paperclip,liveminds/paperclip,Cohealo/paperclip,LongMan/paperclip,victorngkp/paperclip,medcat/paperclip,rpbaptist/paperclip,tiegz/paperclip,raow/paperclip,keathley/paperclip,raow/paperclip,Leadformance/paperclip,manorie/paperclip,pandamako/paperclip,degica/paperclip,yukas/paperclip,Sporky023/paperclip,bdewater/paperclip,InesCARodrigues/paperclip,alexandrz/paperclip,carnivalmobile/paperclip,agcantarelli/paperclip,betesh/paperclip,mdkalish/paperclip,gfvcastro/paperclip,zurb/paperclip,freeslugs/paperclip,frankpinto/paperclip,kerrizor/paperclip,sopheak-se/paperclip,best-teacher/paperclip-old