Tidying of mesh install of nodejs

src/freedombone-image-customise

 INSTALLING_MESH=
 
 install_patchwork() {
-    chroot "$rootdir" apt-get -yq install g++ m4 libtool automake nodejs curl
-    chroot "$rootdir" apt-get -yq install libxext-dev libxtst-dev libxkbfile-dev
-
-    if [ -f $rootdir/usr/bin/nodejs ]; then
-        cp $rootdir/usr/bin/nodejs $rootdir/usr/bin/node
-    fi
-    if [ ! -f $rootdir/usr/bin/node ]; then
-        echo $'/usr/bin/node not found'
-        exit 7235728
-    fi
-    if [ -f /usr/share/npm/bin/npm-cli.js ]; then
-        ln -s /usr/share/npm/bin/npm-cli.js /usr/bin/npm
-    else
-        wget https://www.npmjs.com/install.sh -O $rootdir/root/npm_install.sh
-        if [ ! -f $rootdir/root/npm_install.sh ]; then
-            echo $'Unable to download npm installer'
-            exit 8793636
-        fi
-        chroot "$rootdir" chmod +x /root/npm_install.sh
-        sed -i "s|t=\"\${npm_install}\"|t=\"$NPM_VERSION\"|g" $rootdir/root/npm_install.sh
-        chroot "$rootdir" /root/npm_install.sh
-    fi
-
     git clone https://github.com/ssbc/patchwork $rootdir/etc/patchwork
 
     cat <<EOF > $rootdir/usr/bin/install_patchwork
 create_generic_image
 atheros_wifi
 continue_installation
+image_install_nodejs
 initialise_mesh
 configure_wifi
 configure_user_interface
 image_setup_utils
 image_install_inadyn
-image_install_nodejs
 image_preinstall_repos
 
 # remove downloaded packages

src/freedombone-utils-nodejs

 NODEJS_INSTALLED_APPS_FILE=$HOME/.nodejs-apps
 
 function mesh_install_nodejs {
-    # 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_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 "${rootdir}" apt-get -yq install nodejs curl
+    chroot "$rootdir" apt-get -yq install g++ m4 libtool automake nodejs curl
+    chroot "$rootdir" apt-get -yq install libxext-dev libxtst-dev libxkbfile-dev
 
     if [ ! -f ${rootdir}/usr/bin/nodejs ]; then
         echo $'nodejs was not installed'
         exit 63962
     fi
 
-    # TODO this doesn't work
-#    cat <<EOF > ${rootdir}/root/install-nodejs.sh
-##!/bin/bash
-#npm install -g npm@${NPM_VERSION} --save
-#npm install -g n@${NODEJS_N_VERSION} --save
-#n ${NODEJS_VERSION}
-#npm install -g pug@2.0.0-beta6 --save
-#npm install -g graceful-fs@4.1.10 --save
-#npm install -g minimatch@3.0.3 --save
-#npm install -g npm@${NPM_VERSION} --save
-#cp /usr/local/bin/node /usr/bin/nodejs
-#cp /usr/local/bin/npm /usr/bin/npm
-#EOF
-#    chroot "${rootdir}" chmod +x /root/install-nodejs.sh
-#    chroot "${rootdir}" /root/install-nodejs.sh
-#    if [ ! "$?" = "0" ]; then
-#        chroot "${rootdir}" rm -f /root/install-nodejs.sh
-#        exit 7632572
-#    fi
-#    chroot "${rootdir}" rm -f /root/install-nodejs.sh
+    if [ -f $rootdir/usr/bin/nodejs ]; then
+        cp $rootdir/usr/bin/nodejs $rootdir/usr/bin/node
+    fi
+
+    if [ ! -f $rootdir/usr/bin/node ]; then
+        echo $'/usr/bin/node not found'
+        exit 7235728
+    fi
+
+    if [ -f /usr/share/npm/bin/npm-cli.js ]; then
+        ln -s /usr/share/npm/bin/npm-cli.js /usr/bin/npm
+    else
+        wget https://www.npmjs.com/install.sh -O $rootdir/root/npm_install.sh
+        if [ ! -f $rootdir/root/npm_install.sh ]; then
+            echo $'Unable to download npm installer'
+            exit 8793636
+        fi
+        chroot "$rootdir" chmod +x /root/npm_install.sh
+        sed -i "s|t=\"\${npm_install}\"|t=\"$NPM_VERSION\"|g" $rootdir/root/npm_install.sh
+        chroot "$rootdir" /root/npm_install.sh
+    fi
 }
 
 function remove_nodejs {