Switch to side-by-side view

--- a/GUI/prefs/prefs.cpp
+++ b/GUI/prefs/prefs.cpp
@@ -69,6 +69,13 @@
                       "Start with one default initial tab instead of trying "
                       "to create the tabs and directory <br>"
                       "positions which existed when upplay was last closed.");
+
+        m_w->addParam(idx, ConfTabsW::CFPT_BOOL, "saveseekpos",
+                      "Save seek position when switching tracks",
+                      "When switching tracks by double-clicking in the <br>"
+                      "playlist, start play either at the last pause position "
+                      "for this track if the playlist is in repeat mode, or "
+                      "at the last play position");
 
         // Close to tray ?
         m_w->addParam(idx, ConfTabsW::CFPT_BOOL, "min2tray", "Close to tray",