[redesign] Implement the card component

[mansona]

Todo

• have the ability for a card image that can be on top or to the left
• decide if we're going to have an api <EsCard @title="something" /> or if the title will just be a part of the yielded "card-body"
• rename class "card-content" to be "card-body"

[mansona]

closed in #218