[Story] Dashboard contents/layout should be configurable

[andrewazores]

As of #618 the Dashboard view contains one hardcoded card with an automated analysis report feature. Now that there is possible card-based content to be displayed here, this content should be made configurable so that other card features described in #468 can be added and configured by the user.

• [Task] Make Dashboard cards dynamic stack layout #728
• [Task] Extend Dashboard layout to grid with user-defined card sizes #729
• [Task] Allow drag-and-drop reordering of cards in Dashboard grid #730
• [Task] Set up Dashboard with default configuration for upgrading users #866
• [Task] Import/export dashboard layouts #764
• [Task] Multiple Dashboard Layouts #765
• [Task] Allow enlarged view of individual Dashboard cards #739

[andrewazores]

Someone had the idea that the Add card wizard should display a little preview of the card types to the user so that they can have a better sense of what each card type is/does/looks like without having to step all the way through creating each one.

https://www.patternfly.org/v4/components/tile

or perhaps

https://www.patternfly.org/v4/components/card#selectable-cards

could be good components to use to replace the current Select on the wizard's card type selection step. This way the card types can be displayed as a gallery of miniature preview cards so the user can scan them all at a glance, rather than clicking through each Select value to see the previews.

See: #731 (review)