fixes #832 - adds parameterized class support

Credits:
This patch is based on the original work of Olivier Favre
<olivier@yakaz.com> many many thanks!

• import class parameters, and try to understand their types
• support a complex matrix of environments, puppet classes and their...

fixes #1837 add some indexes to improve performance

fixes #1783 - Default template set incorrect snippet names if snippet name uses underscore

fixes #1736 - fixes odd errors with db migrate

minimal fix for unexplained db migrations failures, refs #1736

refs #1589, ensure that vmware public key is automaticilly imported when testing connection

fixes #1729 safer migration code.

avoid breaking mysql migration from an empty db

missing syntax

Fixed migrations for mysql2