Fix Play/Enchant button alignment on cards

[Phrancis]

See this screenshot:

The way it is displayed on MAZU card is the intended look, however I believe a card needs to have enough buttons/text underneath the picture to "push" it down there. We should probably find a way to anchor it to the card itself so it's always in the same place no matter what.

[Phrancis]

Simon suggested to look into CSS flexbox, I'm checking a tutorial and may end up converting the CardModel if it seems like a good approach.