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Closes #1377

It some cases, it was observered how the app was locked after the user
had signed out.
This commit ensures that set alarms are canceled and that no new ones
will be set after the LockManager service has been stopped.

Fixes #1386

to prevent it from being pushed off-screen

Fixes #1076

Fixes #1078

Also fixes several small UI glitches with long texts

Adds RTL support
Fixing cropping bug

Closes #964

Adds RTL support
Fixes issue with long contact names

Closes #1080

Adds support for RTL languages
Fixes issues with long contact names

Closes #1079

This was done, so private responses don't need to include a Nameable already.
Retreiving a nameable is tricky and requires a data migration,
so we just don't do it now.

This removes the public method for retrieving messages
from individual conversation clients
and just leaves methods that require a transaction
to be used by the ConversationManager only.

This also adds `Shareable`s to invitation response
which is a precondition for #561