Merge pull request #59 from ebu/hotfix-deploy

Hotfix deploy
first draft of readme
remove MySQL password from fabfile
add deployment steps for PlugIt-Server node
add deploy info for celery node
some comments for convenience
fix minor mistakes in README
fix minor issues from code-review
Merge pull request #69 from ebu/readme

Readme
removing wrongly created default again (in 4f9768bb5de9580428613dbe403497ef1f348e6e). It caused MySQL upgrade scripts to fail.
Merge pull request #71 from ebu/hotfix-wrong-default

Hotfix wrong default
Handle the case clone_from is not defined

Line 111 was throwing an exception when calling .id if clone_from
equals null
Merge branch 'develop' into views
in order to get fix for clone issue