remove incorrectly functioning widgets/views based on old lrc

- Removes callutilsdialog and contactpicker used as a filtered
  smartlist proxy for selecting contacts when transferring SIP
  calls or adding to a conference.

- Removes some other widgets that were not being used.

- Diminishes use of old lrc models.

Change-Id: I17847c87a67d117e47dd5db9ca35b2139159312c
Reviewed-by: Sébastien Blin <sebastien.blin@savoirfairelinux.com>
diff --git a/callwidget.cpp b/callwidget.cpp
index 98b64f0..dc3733d 100644
--- a/callwidget.cpp
+++ b/callwidget.cpp
@@ -46,7 +46,6 @@
 // client
 #include "wizarddialog.h"
 #include "windowscontactbackend.h"
-#include "contactpicker.h"
 #include "globalsystemtray.h"
 #include "conversationitemdelegate.h"
 #include "pixbufmanipulator.h"
@@ -505,7 +504,7 @@
 CallWidget::settingsButtonClicked()
 {
     emit setLeftSizeWidget(ui->currentAccountComboBox->width());
-    emit NavigationRequested(ScreenEnum::ConfScreen);
+    emit NavigationRequested(ScreenEnum::SetttingsScreen);
 }
 
 void