Revert 'linear' animation.  (part of e7c823f0)
Un-nest show more/less animations, so animations aren't delayed by other animations.
[Un]indentation style change.
Make all animations that start together finish together: same animation duration.
Fix regressed show more/less animation.

This reverts most of 48b2eab5 and a tiny bit of e7c823f0
(view/posts/_excerpt.xhtml).  Known: The rendering of post stats on excerpts
is broken.  Will fix soon.