Within this commit apart of `ChatContextMenuView` and `MessageContextMenuView`
some other things are fixed:
- pinned messages model (`asyncFetchChatMessagesTask`), which was corrupted most
likely by resolving conflicts
- `pinned by` part of the pinned messages
- set/remove local nickname for a contact
- contacts in a message list and pinned by name, contact in a pinned message list
and pinned by name, one to one chat details and chat tool bar are updated in a way
that they are responsive to the contact's updates
- pinned messages updated received from remote (from the `status-go`) is handled
Fixes#4366
Sale Djenic