Fixed default group's logo be adding content_type and extension
Fixed default group's logo be adding content_type and extension

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