prepare Supervisor for RQ
add rq-worker supervisor Jinja2 template
prepare for rq scheduler usage in Vagrant
start rq scheduler in production setups
install nginx on vagrant production
add some more documentation
remove production vagrant on this branch for now
Merge pull request #955 from PyBossa/vagrant-rq

Vagrant RQ
Merge branch 'master' into issue-repositories

* master:
  remove production vagrant on this branch for now
  add some more documentation
  install nginx on vagrant production
  start rq scheduler in production setups
  prepare for rq scheduler usage in Vagrant
  add rq-worker supervisor Jinja2 template
  prepare Supervisor for RQ