fix conv test
fix conv test

dnuffer/Lasagne,takacsg84/Lasagne,ErnstHowie/Lasagne,DataFighter/Lasagne-tutorial,MihailoIsakov/fishfish,mheilman/Lasagne,gabortakacs/Lasagne,DeanChan/Lasagne,rlkelly/Lasagne,cancan101/Lasagne,Richi91/nntools,kracwarlock/Lasagne,ebattenberg/Lasagne