Added bootstrap bash script to bootstrap requirements of cozy-setup (fabric)

--HG--
extra : histedit_source : 643a2f5d2f936b071643c586561a185f96e91767%2C6921c13f1afc456a8496912b048242487b99f9e2
Moved fabfile.py into it's own package and added help.py task from circuits

--HG--
extra : histedit_source : 0cd513564359b6a3361a028815cc500f30b9edaa%2C0f43a26eb734ecbe6da3d4842c5872ca6b5b8da0
Fixed small typo
put file oranization back to previous orgnaation

it provides a better ux for users who can download only one file without the
need to clone the whole repo.
Merge branch 'master' of github.com:mycozycloud/cozy-setup