Update trac.macports.org to Trac 1.2

[raimue (Rainer Müller)]

Trac 1.2 has been released:

​https://trac.edgewall.org/wiki/TracChangeLog#a1.2Hermes

We will need to test that all plugins are still compatible.

[raimue (Rainer Müller)]

See also the short-term request to update to Trac 1.0.x in #54383.

[neverpanic (Clemens Lang)]

Trac itself can be upgraded without problems.

We need to set [trac] show_full_names = disabled for the username decoration plugin to continue working. We also want this settings for other reasons, since we accept usernames in various fields, but the usernames are not shown anymore with this feature enable.

Additionally, we need a newer version of the autocomplete users plugin. See ​https://trac-hacks.org/ticket/13115. Unfortunately the plugin does not yet have a release with this patch in, so we may have to install from trunk.

[neverpanic (Clemens Lang)]

See [8062bf4bd9dce6a2b50989e7ed0da2f6cb4b1630/trac.macports.org] where I'm preparing changes for 1.2.

[neverpanic (Clemens Lang)]

We needed a maintenance page to redirect people to while we disable the trac virtualhost. I've created ​https://github.com/neverpanic/macports-www-maintenance/, which should work. See ​https://neverpanic.github.io/macports-www-maintenance/ for a rendered version.

[neverpanic (Clemens Lang)]

The update has been started.

[neverpanic (Clemens Lang)]

Trac has been upgraded. Please report any issues you might encounter.