Switch to side-by-side view

--- a/GUI/mainw/mainhw.ui
+++ b/GUI/mainw/mainhw.ui
@@ -133,6 +133,8 @@
     <addaction name="actionSave_Playlist"/>
     <addaction name="actionLoad_Playlist"/>
     <addaction name="separator"/>
+    <addaction name="action_Preferences"/>
+    <addaction name="separator"/>
     <addaction name="action_Close"/>
    </widget>
    <widget class="QMenu" name="menuView">
@@ -149,7 +151,6 @@
     <addaction name="action_Dark"/>
     <addaction name="action_Fullscreen"/>
     <addaction name="separator"/>
-    <addaction name="action_Preferences"/>
    </widget>
    <widget class="QMenu" name="menuAbout">
     <property name="title">