[Meta] Swarm: next steps Mini-groups alpha

TODO

• Supports multiple participants in convInfo.participants & re-add accountId
• Add swarm creation to UI: #242 (closed)
• Add swarm details page: #243 (closed)
• Draw conversation avatar
• Show conversation requests for groups
• Add support to edit conversation infos
• Support conversations infos in smartlist (title/description/avatar)
• (need daemon changes)=>send call