Make collapsed inlines more useful and anchor target highlights more accurate
Summary:
Ref T12616. Fixes T11648. Currently, we snug up replies with a negative margin (from T10563) but this throws off the anchor highlighting.
Instead:
- Remove padding from these dolumns.
- Use margins on the stuff inside them instead.
- Less margins for replies.
- Less margins for collapsed comments.
- Show some text for collapsed comments.
Test Plan:
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12616, T11648
Differential Revision: https://secure.phabricator.com/D17913