tigefa4u projects Trac

User's timezone is taken into account when generating the iCalendar output for the TracRoadmap. Fixes #6028.

The default setup for the milestone group stat providers can accomodate any number of states by having a ''closed'' group grouping the closed tickets and another group for all the others. This fixes #5572.

In addition, it is also now quite easy to customize the groups via the trac.ini file. For example:
{{{
[milestone-groups]
closed = closed
closed.order = 0
closed.query_args = group=resolution
closed.overall_completion = true

active = *
active.order = 1
active.css_class = open

new = new,reopened
new.order = 2
}}}

Make Trac version available to projects index template. Closes #6008.

s/return/raise/ the NotImplementedError, in versioncontrol API. Closes #6011. Thanks to Paolo Capriotti for noticing this.

Testing: A couple notes on Windows.

Milestone: Merge through r6005 from trunk

Apply patch from #3833 to improve dynamic reloading of environements when:
* a component is enabled or disabled
* a plugin is installed or uninstalled via the web administration interface
* the logging configuration is changed
* or any other configuration changes

A big thank you to osimons for working out most of the patch!

Initial wiki blame code from the attachment to #5821

Remove the old security branch. The pycon one has been merged instead in r5514

Get rid of the PyCon 2007 collection of branches, which are either merged or not needed anymore at this point.