* UX: selected indicator more topics spacing
In relation to the selected indicator, this PR addresses a vertical and horizontal issue with the indicator touching the table header and its left alignment to be more consistent with the regular topic list feed.
* UX: border for pill navigation on mobile
Makes UI more consistent desktop -> mobile, by adding a border to the bottom of the Suggested/Related.
* UX: update styling for related/suggested
This PR addresses state issues for icons of the Related & Suggested buttons, as well as well as fixes alignment issues for folding phones / tablets, wider mobile devices by moving styling to the desktop scss file; also replaces border with box-shadow.
