allow to nullify some keys for testing purpouses
allow to nullify some keys for testing purpouses

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

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