fix last_activity_at stat
fix last_activity_at stat

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

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