fixed bug 7019, emblem names are not aligned vertically in
	show properties or the property browser.  Fixed by adding
	a "fixed image height" attribute to nautilus-labeled-image, and
	set it in the properties window and properties browser.

	* libnautilus-extensions/nautilus-labeled-image.c:
	(nautilus_labeled_image_initialize), (is_fixed_height),
	(labeled_image_get_image_dimensions),
	(nautilus_labeled_image_get_image_bounds),
	(nautilus_labeled_image_get_show_image),
	(nautilus_labeled_image_set_fixed_image_height):
	added a fixed_image_height instance variable, and used it
	when appropriate
	* libnautilus-extensions/nautilus-labeled-image.h:
	added setter for the fixed image height attribute

	* src/file-manager/fm-properties-window.c: (create_emblems_page):
	set the fixed image height attribute on the emblems
	* src/nautilus-property-browser.c:
	(make_properties_from_directories),
	(property_browser_category_button_new):
	set the fixed image height attribute for the emblems and also
	the category buttons

	fixed bug 7022, users are confused by the "shared" and "secret"
	emblems; fixed by removing them.

	* data/browser.xml:
	removed secret and shared emblem references
	* data/emblems/Makefile.am:
	removed the emblem .pngs from the makefile
	* data/emblems/secret.png:
	* data/emblems/shared.png:
	removed the emblem .pngs
	* icons/Makefile.am:
	removed the emblem .svgs from the makefile
	* icons/emblem-secret.svg:
	* icons/emblem-shared.svg:
	removed the .svgs