Ability to change size of confirmation window

ubl-settings-usergroups-confirmation.glade

@@ -31,7 +31,6 @@
     <property name="width-request">450</property>
     <property name="height-request">300</property>
     <property name="can-focus">False</property>
-    <property name="resizable">False</property>
     <property name="modal">True</property>
     <property name="default-width">450</property>
     <property name="icon-name">com.ublinux.ubl-settings-usergroups</property>