fix deployment bug when installing custom requirements
fixes for docker playbooks
remove duplicate setting
rerun runit linking properly
optionally enable smallfiles for mongo
use docker django setting files
don't try to start redis and rabbitmq on lite version
use appsembler's fork of configuration repo for edx_ansible
add demo course later in the provisioning process
disable http to https mandatory redirect
enable lms preview site
lms preview site not working after all
enable preview site
explicitly set the number of edx workers
Merge remote-tracking branch 'origin/docker_release' into docker_multi_release