css: remove box and text shadow on sidebar cards
css: remove box and text shadow on sidebar cards

You can trigger the hover states on many cards rapidly by sweeping
your mouse over them. We need this to be fast to computer, and the
shadows were the biggest offenders.

Also fix up the text color so it also animates of hover like other
hover properties. Before the text color would snap over border and
background animated.
[endlessm/eos-sdk#3942]

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib