Handle pending invites correctly

src/state/models/members-view.ts

@@ -46,6 +46,10 @@ export class MembersViewModel {
     return this.hasLoaded && !this.hasContent
   }
 
+  isMember(did: string) {
+    return this.members.find(member => member.did === did)
+  }
+
   // public api
   // =