Show notification when a peer is sharing its position on the non
current conversation.
This needed a lot of changes. Now we store shared position via
accountId + peer.
This also fix location icons and keep state when changing from
one account to another.
Change-Id: I8c1848890efa09f6e296e9da779a355167e4d3d4
GitLab: #888
+ Remove "Accept files from unknown senders" because since swarm
we can't get files from non contacts are the conversation is not
cloned, and non swarm files are ignored
+ Rename "ignore the swarm" to "Mute conversation" as ignore is
unclear
Change-Id: Ifced8f8efe841e2345d50530ee313e6b95b35920
