add gen_status and gen_sitemap to www and quick_www

Added `gen_status` and `gen_sitemap` to near the end of both `make www`
and `make quick_www`.  Moved `find_missing_links` to the end of both
`make www` and `make quick_www`.

Updated `sitemap.xml`.

Performed `make www` on macOS to complete the above.
Performed `make quick_www` on macOS to complete the above.

Makefile

@@ -752,6 +752,8 @@ quick_www:
 	${MAKE} gen_top_html
 	${MAKE} quick_entry_index
 	${MAKE} quick_other_html
+	${MAKE} gen_status
+	${MAKE} gen_sitemap
 	${MAKE} find_missing_links
 	@echo '=-=-=-=-=-= IOCCC complete make $@ =-=-=-=-=-='
 
@@ -780,8 +782,10 @@ www:
 	${MAKE} gen_top_html
 	${MAKE} entry_index
 	${MAKE} gen_other_html
-	${MAKE} find_missing_links
+	${MAKE} gen_status
+	${MAKE} gen_sitemap
 	${MAKE} find_invalid_json
+	${MAKE} find_missing_links
 	@echo '=-=-=-=-=-= IOCCC complete make $@ =-=-=-=-=-='