[PATCH v2] ui-commit: show subject in page title

[jean-christophe manciot]

I have implemented this patch on my website (https://git.sdxlive.com/)
over the latest commit of master branch (1.2.2-2-gfde897b) & restarted
uwsgi.
I use git 1:2.25.1-1~ppa0~ubuntu20.04.1 although I don't think this
could interfere.

In /etc/cgitrc, the following relevant variables are set:
- root-title=...
- root-desc=...
In each repo cgitrc, the following relevant variable is set:
- name=... (<repository name>)

However, unless I'm missing something, I don't see any difference in
any page title: they all keep the format "index :<repository name>".

Is there a special variable which needs to be set?
-- 
Jean-Christophe