OTR UI

At the moment, although OTR is implemented, it is "silent": it is impossible to tell at a glance if a conversation is encrypted or not. It is impossible to tell what your or the other correspondent's fingerprints are, and to authenticate them (or not). It is impossible to use SMP, though we might not care about that right now. It is impossible to manually initiate or close a conversation.

The chat should display a padlock, unlocked and red for plaintext, locked and green for encrypted. Unauthenticated encrypted should be something in between, perhaps locked red? In plaintext, clicking the padlock should initiate a conversation. In an OTR session, clicking the padlock should display a modal giving information about the OTR session, including fingerprints and the trust slider.

This is high-priority for OTR support.