A signal exists for showing errors to the user to make failing cases
more explicit. With this patch, errors detected are displayed to
the end user so that they know that an error occured and what
kind of error occured.
Change-Id: Ib2d4d4fdb171235e0598de0f1c190b8fd0fcc336
+ Remove readOnly from conversation's as it was never used
and not necessary in multi swarm as you can re-add members anyway
so it's never read only.
+ Makes non swarm conversations just readable.
Users can save whatever they want and replace old non migrated
conversations to new swarm.
Change-Id: I8aa2521bc524b6159d7ba0b613834438e293e09e
