tigefa4u projects Trac

TracMercurial: Converted system information to `ISystemInfoProvider`.

Related to #8908.

env: Added a new interface `ISystemInfoProvider` for components to provide version information of external packages they use. This information is displayed on the "About Trac" page and in internal error reports.

Closes #8908.

Create a new branch for web installer work.

versioncontrol: Shorten the author in the "Author" column of the browser view, when the author has the format "First Last <username@...>".

Part of #8046.

ticket: Fixed the ticket preview so that it doesn't display `anonymous` for the owner when there is no owner.

attachment: Added the attachment name in the page title.

Patch by Guy Rozendorn. Closes #7759.

roadmap: Added a checkbox to hide milestones with no due date.

Patch by Ryan Ollos, thanks! Closes #9036.

versioncontrol: Fixed an internal error in the repository index when a Subversion repository wasn't synchronized yet.

Closes #9072.

browser: Make the browser page title more tab-friendly by showing the basename first.

Patch by Guy Rozendom, thanks! Closes #7759.

Ticket template: tweak the CSS for Description help, closes #9065.