Merge branch 'node' into 'master'

buildserver: install nodejs

Install nodejs to allow webapps to be build (in the future...). 


Ref: https://gitlab.com/fdroid/fdroidserver/issues/60

See merge request !183

buildserver/provision-apt-get-install

@@ -64,6 +64,7 @@ packages="
  maven
  mercurial
  nasm
+ nodejs
  openjdk-8-jdk-headless
  optipng
  p7zip