Miscellaneous fixes

-Fix fragment animation on exit
-Use DateUtils.RelativeTimeSpanString instead of SimpleDateFormat
-Fix RecyclerView ordering and remove arbitrary "25" pre-seeding
-Cancel evaluation for only the id corresponding to the recycled
ViewHolder

Fixes: 32918645
Fixes: 32945018
Fixes: 33000429

Change-Id: I55e3a101a02aec8fe03d43ad0b60343d1fa36940