Merge tag 'sparks-1.2.1' into develop

1.2.1
Use `localhost` if no host specified.
Implement a module-wide verbose/quiet attribute.
Enhance the PIP check perms mechanisms, by not discarding the EXEC bit if already present, and not resetting already good permissions as much as possible.
Docstrings for exported tasks.
Quickly reset some local perms to good defaults (SSH, for now); they are regularly borked by `Dropbox` when a sync occurs.
`dev_web` target: workaround a `nodes`/`nom` package version problem on Ubuntu with a PPA for a more up-to-date `nodejs`, and temporarily disable `yeoman-bootstrap`, it doesn't install anymore.
Blacklist `caffeine` during dot files installation, it pollutes my Dropbox log when active by polling/writing a file every second or so.
Merge branch 'release/1.2.2'