Fixes #15066 - operating systems and ovirt < 3.6

The operating systems endpoint was added in ovirt 3.6
https://bugzilla.redhat.com/show_bug.cgi?id=1050243. Older versions
were failing getting 404 when provisioning.

This patch adds a check for this case. We also cache the operating...

Fixes #12945 - use helper for table css classes

Fixes #14769 - avoid template comments because of deface

After many hours spent on debugging I realized that the issue is that
when action view compiles the template, some lines are concatenated
together just split by ";". This becomes problem when ERB tag contained...

Fixes #14326 - Show long compute resource descriptions correctly

Fixes #12979 - Create helper for "new" button

Previously the button classes were applied to new buttons using jQuery.
This commit creates a `new_link` helper that makes sure all new buttons
will receive the correct class and only display if authorized. Also a...

Fixes #12949 - Allow selection of external networks as main network in Openstack

Fixes #4629 - Migrate UI to Patternfly

Fixes #12937 - All parameters can be hidden

The js to hide parameters was moved to lookup_key.js which isn't
included in application.js so only templates that include it
specifically can hide values.

Fixes #4133 - compute resource test connection provides positive feedback

Fixes #8800 - Clip table cells only when needed

For clipping to work, table must have class `table-fixed` and the cell
have class `ellipsis`. Also column widths should be set in table head.
Clipping will occur automagically with tooltip.