Fixes #12659 - Fixed "inherit" behavior

Non-inherited attributes are now sent in the form data.

Fixes #6007 - Allowing to hide smart class parameters

i18n - add Catalan Language

fixes #12624 - add plugin interface to add provision methods

Fixes #12660 - adding no-stretch class to host parameters textarea after unhiding the value

Fixes #12506 - Show smart proxies version in about page

fixes #12594 - vSphere: resource pools are updated when cluster is changed in the gui for new hosts

Fixes #8799 - Show override button when removing overriden global param

Previously, when removing an override for an existing parameter the
override button was not displayed again until the page was reloaded.
Also saved call to `mark_params_override()` when overriding a single...

Fixes #7463 - Add basic support for bridges

Fixes #11458 - Override inline for class parameters

This implements override inline for smart class parameters and smart
variables in host and hostgroup edit forms.
Global variable override inline will be done in a seperate PR.

Authors:
Ori Rabin <orrabin@redhat.com>...