Separate the app and MySQL components in cookbook
Support separate components in install script
Ignore Scalr version when creating Analytics DB
New implementation of the scalr installer

The Scalr installer is now a CLI application, instead of being a
single script.
Add a Docker-based Debian packaging environment
Support SSH directory sharing despite UID mismatch

This enables us to use the user's ~/.ssh/config despite it not having
the right UID, etc.
Add a document target

The document target returns the current configuration for this install
Also publish package to PyPi
Add a stub RPM builder
Integrate wrapper and release infra
Replace legacy wrapper with new wrapper
We don't actually depend on setuptools
Build and upload packages to packagecloud

Packages are built using FPM, in Docker containers to ensure the build
platform corresponds to the deployment platform (so that all paths are
correct, etc.)

Dependencies (like python-requests) aren't handled here.
Implement UX and error handling in the wrapper
Update install script to use packagecloud repos
Add an email subscription option
Temporarily re-add the install script
Release: 7.4.0
Merge pull request #69 from Scalr/release-7.4.0

Release 7.4.0