fix contact selection header theming

Fixes #1343
// FREEBIE
Add time to messages when they are within the week

//FREEBIE
Merge pull request #1368 from mcginty/contact-select-header-dark

fix contact selection header theming
Merge pull request #1383 from jocelynthode/master

Add time to messages when they are within the week
Slightly more verbose "no legacy support" message.
use localized timestamp format for message details

+ fix for #1419 (was: Delete leading zero from fragment timestamp)
  reporter closed that issue #1419 in favour of this patch