fix for #1893

update api documentation

• remove #set_resource_params from Api::BaseController to leave :id param under :id for apipie validations to work
• fix custom apipie validators to return nice errors
• enable apipie validations for bugs to be caught early
• log apipie param errors with info level...

Compute Resources should use the friendly name (e.g. oVirt vs Ovirt)

• fix user documentation
• remove password_confirmation from user api
• Add json template for users#create

fixes #1878 - Double quote in the wrong place included invalid kernel boot option

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 #1825 - unable to select an openstack image.

Note that probably Fog 1.5 is required for this to work.

The new form should save 'New compute resource'

fixes #1849 - Add the current hostgroup name when editing

minor SQL improvments