Updated Lithuanian translation
Updated Greek translation
GladeWidgetAdaptor: Fixed glade_widget_adaptor_object_get_children() for internal widgets.

Internal widgets are defined in Glade in the adaptor class that introduced them.
So in order to get internal widgets that are descendant of another internal widget
we need to walk up the adaptor hierarchy to find where internal widgets are defined.
Removed gladeui/glade-widget-private.h, use glade-private.h instead.
Updated TODO
Seal needed deprecated API.
Sealed deprecated functions gtk_widget_get_margin_left() and
gtk_widget_get_margin_right()
Replaced deprecated functions

gtk_button_new_from_stock()     -> gtk_button_new_from_icon_name()
gtk_widget_render_icon_pixbuf() -> gtk_icon_theme_load_icon()
gtk_widget_set_margin_left()    -> gtk_widget_set_margin_start()

Stock images with icon names
GTK_STOCK_ADD     -> "list-add"
GTK_STOCK_REMOVE  -> "list-remove"
GTK_STOCK_OPEN    -> "document-open"
GTK_STOCK_GO_DOWN -> "go-down"
GTK_STOCK_DIALOG_WARNING -> "dialog-warning"
GTK_STOCK_INFO    -> "dialog-information"
GTK_STOCK_SAVE    -> "document-save"
GTK_STOCK_REFRESH -> "view-refresh"
Migrated from stock icons to icon names

GladeApp GladePointerMode icons and devhelp icon are now registered as icon names

GladeWindow: replaced deprecated gtk_tool_button_new_from_stock() with
gtk_tool_button_new() + gtk_image_new_from_icon_name() to create actions tool items

GTK+ Catalog, glade.glade: replaced every stock icon with the corresponding icon name
TODO: the only stock icon that does not seem to have a replacement is gtk-edit
GladePopup: do not use deprecated GtkImageMenuItem
GladePreviewer: Fixed bug previewing templates.

XML text data was not escaped when generating the template XML.
GladePreviewer: ignore signal connections to avoid warnings about missing symbols.
GladePreviewWindow: force infobar to show a close button and make label selectable
GladePreviewer: show handler information in infobar when a signal is emited.
Added --print-handler option (print handlers info on stdout)
Fix build
Added GThemedIcon support
Updated Spanish translation
[l10n] Update Catalan translation
[l10n] Updated Catalan (Valencian) translation
GladeEditorProperty: re grab focus on load_common() if property is construct-only.

If the property is construct-only, then glade_widget_rebuild() will be called
which means the object will be removed from the project/selection and
a new one will be added, which makes the eprop loose its focus.