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...

updates UI to bootstrap v2

WIP rails3 migration

Fixes #565 - rake puppet:import:puppet_classes misses some changes

Signed-off-by: Paul Kelly <paul.ian.kelly@googlemail.com>

Fixes #450 - Environment imports lose their puppetclass associations

Fixes #239 - Erases environments and puppetclasses

The fix also includes a page in which the use selects the additions
and removals which they would wish to apply to their database.
Errors are reported and an opportunity is given to reapply the changes.

XHTML compliance