fixes #1597 - Restrict compute resources access by user

And add some rights to give non admin users so they can perform some normal actions on the hosts they own.

unit/domain_parameter_test.rb self-broke... added a tiny fix.
Removing compute_resources/vms nesting, it is such a nightmare for functional tests....

fixes incorrect DNS conflict detection

model index and form fixes. show copute provider in the model column is applicable.

minor visual fixes to the compute resource view.

incorrect usage of my hosts scope while processing a error in displaying host list

fixed ui for adding and removing ovirt volumes.
when creating a vm from template, if there was an error in the
form. the vm volumes didnot display correctly.
adding and removing volumes in the same submit action did not function well too.

adds ec2 provisioning support fixes #1223

- added progress bar for instance creation
- minor fixes for certname based deployments
- added ssh provisioning support to orchestartion, which utilize finish
scripts by default
- added images support (part of the vm compute tab)...

fixes #1575 - incorrect error message is shown

Refactor my_hosts and my_facts scopes to include auth checks

Fix privacy leaks in stats, facts, and dashboard - fixes #1582