Bug 725553: TIFF compression broken

remove the radio button box from the ui file because
it hides the radio_group created in file-tiff-save.c that
also properly connects signals
libgimp: oversight computing thumbnail size

exporting an image with metadata and thumbnail and with
an aspect ratio of w:h = 1:5, file-jpeg used to print:

(file-jpeg:): LibGimp-CRITICAL **: gimp_image_get_thumbnail: assertion 'width > 0 && width <= 1024' failed
(file-jpeg:): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_rowstride: assertion 'GDK_IS_PIXBUF (pixbuf)' failed
(file-jpeg:): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_n_channels: assertion 'GDK_IS_PIXBUF (pixbuf)' failed
(file-jpeg:): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_width: assertion 'GDK_IS_PIXBUF (pixbuf)' failed
(file-jpeg:): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_height: assertion 'GDK_IS_PIXBUF (pixbuf)' failed
(file-jpeg:): GdkPixbuf-CRITICAL **: gdk_pixbuf_get_pixels: assertion 'GDK_IS_PIXBUF (pixbuf)' failed
(file-jpeg:): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed