fixes #2242 - concatenate HTML errors, don't use Array#to_s on Ruby 1.9

fixed test connection for existing compute-resource.

added blank option in ovirt select template.

refs #2254 - minor fixes related to facts import

refs #2254 - minor fixes related to host form

fixes #2254 - Add STI to hosts table

Signed-off-by: Joseph Mitchell Magen <jmagen@redhat.com>
Signed-off-by: Ohad Levy <ohadlevy@gmail.com>

fixes #1988 - CRUD Actions for nested parameters for host, domain, hostgroup, os

e.g.

GET /api/domains/6/parameters
POST /api/hosts/6/parameters
PUT /api/hostgroups/6/parameters/100
DELETE /api/operatingsystems/6/parameters/100

fixes #2239 API v2 CRUD for locations and organizations and added nested loc/org

edited TaxHost - selected_ids and used_ids do NOT return [] if ignored?

fixes #2229 add an IAM role field to a compute image.

This allows use of IAM to control access to AWS services within an instance.