Fixed key creation password startup visibility

ubl-settings-repomanager-key.glade

@@ -345,6 +345,8 @@
                                   <object class="GtkEntry" id="PasswordEntry">
                                     <property name="visible">True</property>
                                     <property name="can-focus">True</property>
+                                    <property name="visibility">False</property>
+                                    <property name="invisible-char">*</property>
                                   </object>
                                   <packing>
                                     <property name="expand">True</property>
@@ -381,6 +383,8 @@
                                   <object class="GtkEntry" id="PasswordConfirmationEntry">
                                     <property name="visible">True</property>
                                     <property name="can-focus">True</property>
+                                    <property name="visibility">False</property>
+                                    <property name="invisible-char">*</property>
                                   </object>
                                   <packing>
                                     <property name="expand">True</property>