Revert nodejs versions, otherwise ghost won't install

src/freedombone-utils-nodejs

 
 # change these versions at your peril. Things will often crash if you don't
 # have specifically the correct versions
-NODEJS_VERSION='7.10.0'
+NODEJS_VERSION='6.10.1'
 NODEJS_N_VERSION='2.1.7'
-NPM_VERSION='4.2.0'
+NPM_VERSION='4.0.5'
 
 # This file keeps track of the apps needing nodejs
 # so that it can be removed if tere are no apps which need it
     # Note: this has to be jessie for now
     wget -qO- https://deb.nodesource.com/gpgkey/nodesource.gpg.key > ${rootdir}/root/node.gpg.key
     chroot "${rootdir}" apt-key add /root/node.gpg.key
-    echo "deb https://deb.nodesource.com/node_7.x jessie main" > ${rootdir}/etc/apt/sources.list.d/nodesource.list
-    echo "deb-src https://deb.nodesource.com/node_7.x jessie main" >> ${rootdir}/etc/apt/sources.list.d/nodesource.list
+    echo "deb https://deb.nodesource.com/node_6.x jessie main" > ${rootdir}/etc/apt/sources.list.d/nodesource.list
+    echo "deb-src https://deb.nodesource.com/node_6.x jessie main" >> ${rootdir}/etc/apt/sources.list.d/nodesource.list
     chroot "${rootdir}" apt-get update
     chroot "${rootdir}" apt-get -yq install nodejs curl
 
         # Note: this has to be jessie for now
         wget -qO- https://deb.nodesource.com/gpgkey/nodesource.gpg.key > /root/node.gpg.key
         apt-key add /root/node.gpg.key
-        echo "deb https://deb.nodesource.com/node_7.x jessie main" > /etc/apt/sources.list.d/nodesource.list
-        echo "deb-src https://deb.nodesource.com/node_7.x jessie main" >> /etc/apt/sources.list.d/nodesource.list
+        echo "deb https://deb.nodesource.com/node_6.x jessie main" > /etc/apt/sources.list.d/nodesource.list
+        echo "deb-src https://deb.nodesource.com/node_6.x jessie main" >> /etc/apt/sources.list.d/nodesource.list
 
         apt-get update