Replaces default icons for “catalog” and “catalog items”

[epwinchell]

This PR replaces the "T" used to represent catalogs with a closed folder in: service catalogs, catalog items, and catalogs. It also replaces the default icon "T" used to represent catalog items with a cube.

Relates to: #971

https://bugzilla.redhat.com/show_bug.cgi?id=1439779

Old

New

[epwinchell]

@gmcculloug @dclarizio Please review
cc @skateman

[miq-bot]

@epwinchell unrecognized command 'bug', ignoring...

Accepted commands are: add_label, assign, close_issue, move_issue, remove_label, rm_label, set_milestone

[miq-bot]

@epwinchell 'gmcculloug' is an invalid assignee, ignoring...

[miq-bot]

Checked commit https://github.com/epwinchell/manageiq-ui-classic/commit/0ab3a09cd02eb9f790fa86540c12e8f51cf7c255 with ruby 2.2.6, rubocop 0.47.1, and haml-lint 0.20.0
2 files checked, 0 offenses detected
Everything looks good. 🍰

[epwinchell]

@miq-bot add_label bug, graphics, fine/yes

[epwinchell]

@miq-bot assign @dclarizio

[gmcculloug]

Looks good, but wondering if there is also a way to visually separate Catalog Bundles and Catalog Items when no custom image is specified. Since a bundle is just a collection of items maybe it can show multiple boxes?

This, of course, depends on if we can distinguish the object type. The value for the Bundle or Item is stored in the service_type field as composite or atomic. cc @skateman

[simaishi]

Fine backport details:

$ git log -1
commit 0c39697744fefda4c18005dec4924ae86b8c10d6
Author: Dan Clarizio <dclarizi@redhat.com>
Date:   Wed Apr 12 12:56:06 2017 -0700

    Merge pull request #1024 from epwinchell/catalog_icons
    
    Created an issue for @gmcculloug's request.
    (cherry picked from commit e4d03284d7bb046ca3b35aee45ce4894bb31754b)