UI: on the properties dialog, focus the Close button instead of the Help button by default

the Close button should be default so you can press Enter or Space without unintentionally opening the help manual

Author: kn00tcn

src/ui/properties.ui

@@ -23,9 +23,7 @@
                 <property name="label">gtk-help</property>
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
-                <property name="has_focus">True</property>
                 <property name="can_default">True</property>
-                <property name="has_default">True</property>
                 <property name="receives_default">False</property>
                 <property name="use_stock">True</property>
               </object>
@@ -41,7 +39,9 @@
                 <property name="label">gtk-close</property>
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
+                <property name="has_focus">True</property>
                 <property name="can_default">True</property>
+                <property name="has_default">True</property>
                 <property name="receives_default">False</property>
                 <property name="use_stock">True</property>
               </object>