Preferences: Change order and visibilty of checkbuttons

- Hide update check on linux
- Remove Windows only tooltip
- Change order of elements

gajim/data/gui/preferences_window.ui

 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.36.0 -->
+<!-- Generated with glade 3.22.1 -->
 <interface>
   <requires lib="gtk+" version="3.22"/>
   <object class="GtkAdjustment" id="adjustment_status_auto_away">
@@ -2719,6 +2719,25 @@ to discover one from the server. (Example: stun.iptel.org)</property>
                         <property name="position">2</property>
                       </packing>
                     </child>
+                    <child>
+                      <object class="GtkCheckButton" id="update_check">
+                        <property name="label" translatable="yes">_Check for Gajim updates periodically</property>
+                        <property name="sensitive">False</property>
+                        <property name="can_focus">True</property>
+                        <property name="receives_default">False</property>
+                        <property name="no_show_all">True</property>
+                        <property name="tooltip_text" translatable="yes">Enables a weekly update check</property>
+                        <property name="halign">start</property>
+                        <property name="use_underline">True</property>
+                        <property name="draw_indicator">True</property>
+                        <signal name="toggled" handler="_on_update_check_toggled" swapped="no"/>
+                      </object>
+                      <packing>
+                        <property name="expand">False</property>
+                        <property name="fill">True</property>
+                        <property name="position">3</property>
+                      </packing>
+                    </child>
                     <child>
                       <object class="GtkBox">
                         <property name="visible">True</property>
@@ -2768,27 +2787,7 @@ to discover one from the server. (Example: stun.iptel.org)</property>
                       <packing>
                         <property name="expand">False</property>
                         <property name="fill">True</property>
-                        <property name="position">3</property>
-                      </packing>
-                    </child>
-                    <child>
-                      <object class="GtkCheckButton" id="update_check">
-                        <property name="label" translatable="yes">_Check for Gajim updates periodically</property>
-                        <property name="visible">True</property>
-                        <property name="sensitive">False</property>
-                        <property name="can_focus">True</property>
-                        <property name="receives_default">False</property>
-                        <property name="no_show_all">True</property>
-                        <property name="tooltip_text" translatable="yes">Enables a weekly update check (Windows only)</property>
-                        <property name="halign">start</property>
-                        <property name="use_underline">True</property>
-                        <property name="draw_indicator">True</property>
-                        <signal name="toggled" handler="_on_update_check_toggled" swapped="no"/>
-                      </object>
-                      <packing>
-                        <property name="expand">False</property>
-                        <property name="fill">True</property>
-                        <property name="position">3</property>
+                        <property name="position">4</property>
                       </packing>
                     </child>
                     <child>
@@ -2805,7 +2804,7 @@ to discover one from the server. (Example: stun.iptel.org)</property>
                       <packing>
                         <property name="expand">False</property>
                         <property name="fill">True</property>
-                        <property name="position">4</property>
+                        <property name="position">5</property>
                       </packing>
                     </child>
                   </object>