Use the new powerstate icons in treeview for VMs

[skateman]

I added support for iconBackground in bootstrap-treeview, so we can use the new powerstate icons with background in the trees. This way the trees get more consistent with the quadicons and the textual summaries. Note that for VMs you should set the visibility of VM nodes under My settings.

VMs and Templates

Before:

After:

VM Genealogy

Before:

After:

Host networking

Before:

After:

Assigned server roles

Before:

After:

@miq-bot add_label gaprindashvili/no, graphics
@miq-bot add_reviewer @epwinchell

[epwinchell]

Tested. Looks good.

[skateman]

This won't work for templates and archived VMs, marking it as wip 😞

[miq-bot]

This pull request is not mergeable. Please rebase and repush.

[miq-bot]

Checked commits skateman/manageiq-ui-classic@28cfd28~...dc73d1d with ruby 2.3.3, rubocop 0.52.1, haml-lint 0.20.0, and yamllint 1.10.0
9 files checked, 0 offenses detected
Everything looks fine. 🍪

[simaishi]

Hammer backport details:

$ git log -1
commit 5a949290f4fd207a7d4d78cc6066a2cc3bd43e10
Author: Dan Clarizio <[email protected]>
Date:   Wed Sep 26 10:58:43 2018 -0700

    Merge pull request #4616 from skateman/treeview-powerstate
    
    Use the new powerstate icons in treeview for VMs
    
    (cherry picked from commit b9d30e3b9827c5b6877b13be6c9fad5ebf0a4d82)