qml: reconnect models on account's change

Change-Id: I7e88828308c8d64ea30e8ad15db950e0605d86dc
diff --git a/src/lrcinstance.h b/src/lrcinstance.h
index 16762f1..190b383 100644
--- a/src/lrcinstance.h
+++ b/src/lrcinstance.h
@@ -284,6 +284,7 @@
     setSelectedAccountId(const QString &accountId = {})
     {
         instance().selectedAccountId_ = accountId;
+        emit instance().currentAccountChanged();
         QSettings settings("jami.net", "Jami");
         settings.setValue(SettingsKey::selectedAccount, accountId);
 
@@ -454,6 +455,7 @@
 
 signals:
     void accountListChanged();
+    void currentAccountChanged();
 
 private:
     LRCInstance(migrateCallback willMigrateCb = {}, migrateCallback didMigrateCb = {})