Fix getUser binding loops & coro race conditions

src/qml/Models/Users.qml

@@ -7,15 +7,13 @@ HListModel {
         var found = getWhere({"userId": user_id}, 1)
         if (found.length > 0) { return found[0] }
 
-        append({
+        py.callCoro("request_user_update_event", [user_id])
+
+        return {
             "userId":        user_id,
             "displayName":   "",
             "avatarUrl":     "",
             "statusMessage": ""
-        })
-
-        py.callCoro("request_user_update_event", [user_id])
-
-        return getWhere({"userId": user_id}, 1)[0]
+        }
     }
 }

src/qml/Python.qml

@@ -17,17 +17,17 @@ Python {
     }
 
     function callCoro(name, args, kwargs, callback) {
-        call("APP.call_backend_coro", [name, args, kwargs], function(uuid){
-            pendingCoroutines[uuid] = callback || function() {}
-        })
+        var uuid = Math.random() + "." + name
+
+        pendingCoroutines[uuid] = callback || function() {}
+        call("APP.call_backend_coro", [name, uuid, args, kwargs])
     }
 
     function callClientCoro(account_id, name, args, kwargs, callback) {
-        var args = [account_id, name, args, kwargs]
+        var uuid = Math.random() + "." + name
 
-        call("APP.call_client_coro", args, function(uuid){
-            pendingCoroutines[uuid] = callback || function() {}
-        })
+        pendingCoroutines[uuid] = callback || function() {}
+        call("APP.call_client_coro", [account_id, name, uuid, args, kwargs])
     }
 
     Component.onCompleted: {

src/qml/SidePane/AccountDelegate.qml

@@ -6,9 +6,7 @@ Column {
     id: accountDelegate
     width: parent.width
 
-    // Avoid binding loop by using Component.onCompleted
-    property var userInfo: null
-    Component.onCompleted: userInfo = users.getUser(model.userId)
+    property var userInfo: users.getUser(model.userId)
 
     property bool expanded: true
 
@@ -19,6 +17,7 @@ Column {
 
         HUserAvatar {
             id: avatar
+            // Need to do this because conflict with the model property
             Component.onCompleted: userId = model.userId
         }