smartlist: switch to conversations tab on invitation accept

- switch tab to conversations smartlist
- go to welcomeview

TODO: define UI behavior while waiting for the smartlist update

Gitlab: #284

Change-Id: I251c49e5b0b418f41d5872ef09d32db5bc940df2

src/mainview/MainView.qml

@@ -463,6 +463,11 @@ Rectangle {
             function onNavigateToWelcomePageRequested() {
                 backToMainView()
             }
+
+            function onInvitationAccepted() {
+                mainViewSidePanel.selectTab(SidePanelTabBar.Conversations)
+                showWelcomeView()
+            }
         }
 
         Component.onCompleted: {

src/messagesadapter.cpp

@@ -664,6 +664,9 @@ MessagesAdapter::acceptInvitation(const QString& convUid)
 {
     const auto currentConvUid = convUid.isEmpty() ? lrcInstance_->getCurrentConvUid() : convUid;
     lrcInstance_->getCurrentConversationModel()->makePermanent(currentConvUid);
+    if (convUid == currentConvUid_)
+        currentConvUid_.clear();
+    emit invitationAccepted();
 }
 
 void

src/messagesadapter.h

@@ -91,6 +91,7 @@ signals:
     void needToUpdateSmartList();
     void contactBanned();
     void navigateToWelcomePageRequested();
+    void invitationAccepted();
 
 public slots:
     void slotSendMessageContentSaved(const QString& content);