fixes #223 - When a host update has errors then the render :edit loses required variables

Fixes #132 - Added a clone operation

This clones the AR, attaches clones of the
originals host_parameters and then renders the "new" action, ready for editing.

The host_parameters must not use validate_presence of :host_id when using nested attributes.
Created a hidden :nested attribute to the form to flag this behaviour...

Fixes #183 - Adds searchbar facility to hosts

Qualified the fact_selected partial
Added a reset button
Added popup help
Beautification and grooming

fixes #238 - Report wrong marked

fixes #237 - installing puppet from epel breaks if base image is not 5.3 or 4.9 release

fixes #235 - Small refactoring of the media handling for operating system families: * Use URI class for any URI related operations * Added substitution for $version, $major and $minor in media path * Force use of http(s)|ftp|nfs URI schema: NFS shares have now to be entered in URI form: nfs://server/path/.../ instead of server:/path/.../

fixes #226 - Return OutofSync, Error Host list from Dashboard controller as YAML

• added better module detection to properly show the module list
• Add sorting to module class lists
• Add description to each link

fixes #231 - find_each LocalJumpError (no block given)

added titles to hosts show page actions