allow blank slugs
allow blank slugs

Signed-off-by: David A. Cuadrado <9e86d6d2f3901859480d56aec66da07500c6a5df@gmail.com>

sinnerex/zoorab,anuragsolanki/ofri-Haus,mofaq/quango-classic,amyhua/QnA,gravityrail/shapado,quango/shapado-temp,quango/quango,amyhua/QnA,10xEngineer/shapado,ooohiroyukiooo/shapado,ooohiroyukiooo/shapado,umamao/umamao,quango/mc-shapado,sinnerex/zoorab,StephenSullivan/quango-junk,quango/mc-shapado,mofaq/quango-classic,binarycode/shapado,quango/pegasus,gravityrail/shapado,stan/shapado,ooohiroyukiooo/shapado,10xEngineer/shapado,ricodigo/shapado,quango/quango,NazarK/shapado,binarycode/shapado,ooohiroyukiooo/shapado,stan/shapado,stan/shapado,NazarK/shapado,umamao/umamao,quango/quango,mofaq/quango-classic,cctuan/shapado_g,StephenSullivan/quango-junk,anuragsolanki/ofri-Haus,stan/shapado,quango/pegasus,quango/pegasus,cctuan/shapado_g,StephenSullivan/quango-junk,10xEngineer/shapado,cctuan/shapado_g,mofaq/quango-classic,sinnerex/zoorab,ricodigo/shapado,amyhua/QnA,quango/quango,StephenSullivan/quango-junk,quango/shapado-temp,gravityrail/shapado,NazarK/shapado,umamao/umamao,ricodigo/shapado