fix empty contact filter
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.
prevent NPE in MMS logic

Fixes #1434
// FREEBIE
Merge pull request #1354 from agrajaghh/fix_empty_contact_filter

Fix empty contact filter not working properly
Merge pull request #1437 from mcginty/mms-npe

prevent NPE in MMS logic
fix receiving utf-8 characters in multimedia push messages

Throw AssertionError instead of logging and trying to recover
Introduction of a new "About application" page

+ version number from Manifest
+ urls for license, list of changes, support
+ based on concepts as found in https://github.com/schildbach/bitcoin-wallet
+ theme-aware page (dark/light design)
+ returns correctly from web pages (like source code, support forum) to the About page
+ (C) 2014 Open Whisper Systems
+ obeying code style guidelines