tigefa4u projects Trac

Fix for [[html(¶)]] appearing at the start of comment headings.

Minor layout change to ticket replies, floating links to the right.

Add retargeting of open tickets when closing a milestone. Closes #2743.

Added support for a global plugins directory, as described in #2638. Unlike the
environment plugins directory, plugins in this location will not be
automatically enabled.

WebAdmin: Add support for `neo_cs.CS` objects as admin page templates.

In case of exceptions raised early during the processing of a request, show at least the traceback as plaintext, instead of only the exception value.

Pass req through to post request filter method.

Make the output of [wiki:TracAdmin trac-admin] more readable on small terminals. Fixes #2496.

Slightly clarify [wiki:TracStandalone tracd] command line argument, so that the project directory doesn't get confused with the project name, as suggested in #3218

Don't truncate headings, which was done by mistake in r3353. Fixes #3225.