Fix user_script migration to allow blank=True #355
Fix user_script migration to allow blank=True #355

Minkov/site,Phoenix1369/site,Phoenix1369/site,Phoenix1369/site,Minkov/site,DMOJ/site,monouno/site,Phoenix1369/site,DMOJ/site,monouno/site,Minkov/site,monouno/site,DMOJ/site,Minkov/site,DMOJ/site,monouno/site,monouno/site