update npm packages

.husky/.gitignore

@@ -0,0 +1 @@
+_

.husky/pre-push

@@ -0,0 +1,26 @@
+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+PURPLE='\033[0;35m'
+NC='\033[0m' # No Color
+
+. "${VIRTUAL_ENV}/bin/activate"
+
+if [ $? -ne 0 ]
+then
+    printf "${PURPLE}Failed to find virtualenv. Skipping pre-push hook.\n${NC}"
+    exit 0
+fi
+
+set -e
+
+printf "${PURPLE}Running pre-push tests.${NC}\n"
+printf "${PURPLE}npm tests...${NC}\n"
+npm test
+printf "${PURPLE}pycodestyle tests...${NC}\n"
+pycodestyle .
+printf "${PURPLE}unit tests...${NC}\n"
+python -Wall manage.py test --noinput
+set +e
+
+printf "${PURPLE}Tests passed.${NC}\n"