Fixes #4014 - Correctly use to_label when showing OSs

Fixes #3927 - Allow VMs to provision via user-data

fixes #2542 - sort image listing with datatables

Feature #2368 - form helpers, exceptions and fixes

Feature #2368 - i18n extracting strings

removed the need to add 'btn' class for the action_buttons helper, and changed the action buttons to small.

minor visual fixes to the compute resource view.

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)...