[devtools] qunit: only start firefox once per test
The separate profile initialization step doesn't seem necessary anymore.
This was due to the system-wide installation of the "Sage" Firefox
extensions which breaks -url on a fresh profile. Removing this obnoxious
extension allows us to launch Firefox in a standard way.
Related to #5533333.
.. role:: raw-html(raw)
:format: html
RSS driven
----------
RSS is a pretty useful technology that can be widely used on this
site. Any set of data can be presented as RSS. You can then plug in
an RSS reader into that and follow the site activity. For example :
:raw-html:`<p><a class="reference"
href="../view?vid=rss&rql=Any+X%2CM+WHERE+X+modification_date+M+ORDERBY+M+DESC+LIMIT+30"><img
alt="rss" src="../data/rss.png"> latest changes</a></p>`