Ensure global node modules directory is created during upgrades

src/freedombone-utils-nodejs

     if [ ! -f /etc/apt/sources.list.d/nodesource.list ]; then
         return
     fi
+    nodejs_setup_global_modules
     if grep -q "node_8.x" /etc/apt/sources.list.d/nodesource.list; then
         if [ -f /usr/local/bin/node ]; then
             CURR_NODE_VERSION=$(node --version)
 }
 
 function nodejs_setup_global_modules {
+    if [ ! -f /usr/local/bin/node ]; then
+        return
+    fi
     if [ ! -d "$rootdir/root/.npm-global" ]; then
         mkdir "$rootdir/root/.npm-global"
     fi