ux: change application start

- make the wizard a widget in the mainwindow navstack
- remove findRingAccount, any account present should not invoke the
  wizard

Change-Id: I5341d9060e17b74ac253619d70aad6d2d9a93874
Reviewed-by: Isa Nanic <isa.nanic@savoirfairelinux.com>
diff --git a/accountlistmodel.cpp b/accountlistmodel.cpp
index fb7b2da..0297d43 100644
--- a/accountlistmodel.cpp
+++ b/accountlistmodel.cpp
@@ -51,7 +51,7 @@
 QVariant AccountListModel::data(const QModelIndex &index, int role) const
 {
     auto accountList = LRCInstance::accountModel().getAccountList();
-    if (!index.isValid() || accountList.size() == 0) {
+    if (!index.isValid() || accountList.size() <= index.row()) {
         return QVariant();
     }