Rather than verifying eachothers keys separately, you now verify the
privacy with your recipient by sharing a single composite number or
QRCode.
This is a breaking change, in coordination with Desktop and Android.
UX
--
Fingeprint is no longer in line with identity key error. Instead you
have the option of going to the full-screen safety number verification
experience.
Overhauled fingerprint design
-----------------------------
* use same modal dismiss button as elsewhere
* remove fingerprint from settings.
* quick slide in animation vs slow fade
* existing was painfully slow
* blur effect is better metaphor for something slide over top
* anyway there was a rendering glitch in the end of fade where
underlying navbar would "snap" out
Also Fixed
----------
Always provide a name string for contact
* Centralize all the nil-checking
* Fall back to "unknown contact"
allow multi-line error messages
// FREEBIE
- Using same clang format file for old and new files.
- Moving out all TextSecure code to allow other clients (OS X, iOS) to
integrate easily TextSecure functionality.
- Use TextSecure API to signup.
- Revising iconography to stick to v2.0 design.
- Multiple bug fixes based on testers feedback
- Integration with system addressbook
- Removing unused assets.
- Renames GroupModel to TSGroupModel for TextSecureKit consistency.
- Refactors the settings into categories (joint work with @dtsbourg)
- Removes settings and logic for background push.
