enable 'Select a media object' dialog to remember its size

gramps/gen/config.py

@@ -181,6 +181,8 @@ register('geography.show_cross', False)
 register('geography.path', "")
 register('geography.use-keypad', True)
 
+register('interface.addmedia-height', 500)
+register('interface.addmedia-width', 700)
 register('interface.address-height', 450)
 register('interface.address-width', 650)
 register('interface.attribute-height', 350)

gramps/gui/editors/addmedia.py

@@ -102,6 +102,9 @@ class AddMedia(ManagedWindow):
             self.glade.toplevel,
             self.glade.get_object('title'),
             _('Select a media object'))
+        self.height_key = 'interface.addmedia-height'
+        self.width_key = 'interface.addmedia-width'
+        self._set_size()
 
         self.description = self.glade.get_object("photoDescription")
         self.image = self.glade.get_object("image")

gramps/gui/glade/addmedia.glade

@@ -5,8 +5,6 @@
   <requires lib="grampswidgets" version="0.0"/>
   <object class="GtkDialog" id="addmedia">
     <property name="can_focus">False</property>
-    <property name="default_width">650</property>
-    <property name="default_height">450</property>
     <property name="type_hint">dialog</property>
     <child internal-child="vbox">
       <object class="GtkBox" id="dialog-vbox30">