Fix inline highlight behaviors for Pholio
Summary:
Some recent CSS change tweaked these out a bit. They were also sort of weird looking after fixing the double-draw thing:
- Make them work properly;
- make the implementation a bit simpler;
- make them clearer visually.
Also fix a bug where "border" and "fill" were accidentally reversed.
Test Plan:
{F34625}
(The highlight on the reticle is a little hard to pick out in the screenshot, but very obvious in practice.)
Reviewers: chad
Reviewed By: chad
CC: aran
Differential Revision: https://secure.phabricator.com/D5228