Fixed some security issues

AlexeyAB

2018-06-15 e1e5abe19197f2bb56a9d320b31275db4706aa4d

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classes= 20
train  = data/train_voc.txt
valid  = data/2007_test.txt
#difficult = data/difficult_2007_test.txt
names = data/voc.names
backup = backup/