fix(gerrit): return HTML titles in more cases

At present, we don't return HTML titles if there's a trailing slash,
or a patchset. Instead, just consume the / and anything after it.

This also fixes /123, because this is HTTP redirected to the full path
*with a trailing slash* which otherwise wouldn't get the title
injected.

Change-Id: Idfd0e67752880a37dce0b400a3c1cfc53fac2912
Reviewed-on: https://cl.tvl.fyi/c/depot/+/859
Reviewed-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI

third_party/gerrit/0001-Use-detzip-in-download_bower.py.patch

@@ -0,0 +1,25 @@
+From aa4cda172a61eb4f09759cba98f4645fe74753a9 Mon Sep 17 00:00:00 2001
+From: Luke Granger-Brown <git@lukegb.com>
+Date: Thu, 2 Jul 2020 23:02:09 +0100
+Subject: [PATCH 1/4] Use detzip in download_bower.py
+
+---
+ tools/js/download_bower.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tools/js/download_bower.py b/tools/js/download_bower.py
+index 1df4b826bc..65bda74082 100755
+--- a/tools/js/download_bower.py
++++ b/tools/js/download_bower.py
+@@ -106,7 +106,7 @@ def main():
+                 args.b, '--quiet', 'install', '%s#%s' % (args.p, args.v)))
+         bc = os.path.join(cwd, 'bower_components')
+         subprocess.check_call(
+-            ['zip', '-q', '--exclude', '.bower.json', '-r', cached, args.n],
++            ['detzip', '--exclude', '.bower.json', cached, args.n],
+             cwd=bc)
+ 
+         if args.s:
+-- 
+2.25.1
+