Added rarity symbol to CardView.

Implemented loyalty display on card detail. Further, implemented change so
that if a card doesn't have certain pieces of data (e.g. starting loyalty,
p/t, etc.) those fields are removed from the detail view. Still some to
clean up: flavor text, for example, but mostly taken care of.

Starting to look pretty sparce on certain cards now, though. May need to
reconsider the layout for this page.
Many a change to the style and formatting of various activities and
dialogs and fragments and etc. Looks substantially better (at least IMO)
on the dark layout, so that's good. Probably going to call it good on this
version, other than the addition of a (at least moderately) legit app
icon.