Add support for emojis in old Android versions, enable flags

Based on https://github.com/WhisperSystems/Signal-Android/commit/f7474362ff8bc75fff70ed75a1caad31fd55374e

Add action to send drafts from main activity

Do not vibrate when message is decrypted and Silence was locked

Update emojis

Display notification if app is locked

Fixes #485

unbreak notification light for encrypted messages

Fix notification vibration in Android N

Fixes #447

add support for database downgrade

Revert "request delivery reports by default"

Add templates for issues and pull requests

Carey Metcalfe authored Aug 28, 2016 and Bastien Le Querrec committed Nov 13, 2016

This reverts commit b0e1020f.

Some mobile networks charge for delivery reports so this option
shouldn't be on by default.

Fix crash in MessageDetailsActivity

Upstream

FeuRenard authored Nov 03, 2016 and Bastien Le Querrec committed Nov 12, 2016

Closes https://github.com/WhisperSystems/TextSecure/pull/5833
Related to https://github.com/WhisperSystems/Signal-Android/issues/4906
// FREEBIE

Upstream commit: https://github.com/WhisperSystems/Signal-Android/commit/a3244de587012b18b719e30091abfc5838316c71

haffenloher authored Oct 09, 2016 and Bastien Le Querrec committed Nov 12, 2016

Related https://github.com/WhisperSystems/Signal-Android/issues/672
Closes https://github.com/WhisperSystems/TextSecure/pull/5772

//FREEBIE

Upstream commit: https://github.com/WhisperSystems/Signal-Android/commit/23544fae8a259fcd38162a27aa53221175b4ab7e

mateoeh authored Oct 19, 2016 and Bastien Le Querrec committed Nov 12, 2016

Fixes https://github.com/WhisperSystems/TextSecure/issues/5098
Closes https://github.com/WhisperSystems/TextSecure/pull/5796
// FREEBIE

Upstream commit: https://github.com/WhisperSystems/Signal-Android/commit/0a72f6b32e160f415cfc93bc04cb06811e01d339