serve all in-crate js files

starting with rust-lang/rust#59776, the search index, aliases, and
source file list are getting the resource suffix added to their file
names. this means we can't route them from a static path any more.

since we always check the static file router first, this will still
allow serving `main.js` for rustdoc versions prior to the addition of
`--static-root-path`, and also allows rustdoc to add per-crate
javascript files without requiring docs.rs to update to handle it.

(it also allows us to start hosting things *other* than rustdoc output
as docs - e.g. mdbook output - in the future without changing the
routing table massively.)

src/web/mod.rs

@@ -170,21 +170,15 @@ impl CratesfyiHandler {
         router.get("/:crate/:version/",
                    rustdoc::rustdoc_redirector_handler,
                    "crate_version_");
-        router.get("/:crate/:version/search-index.js",
-                   rustdoc::rustdoc_html_server_handler,
-                   "crate_version_search_index_js");
+        router.get("/:crate/:version/*.js",
+                   rustdoc::rustdoc_redirector_handler,
+                   "crate_version_js");
         router.get("/:crate/:version/settings.html",
                    rustdoc::rustdoc_html_server_handler,
                    "crate_version_settings_html");
         router.get("/:crate/:version/all.html",
                    rustdoc::rustdoc_html_server_handler,
                    "crate_version_all_html");
-        router.get("/:crate/:version/aliases.js",
-                   rustdoc::rustdoc_html_server_handler,
-                   "crate_version_aliases_js");
-        router.get("/:crate/:version/source-files.js",
-                   rustdoc::rustdoc_html_server_handler,
-                   "crate_version_source_files_js");
         router.get("/:crate/:version/:target",
                    rustdoc::rustdoc_redirector_handler,
                    "crate_version_target");