tigefa4u projects Trac

Update ChangeLog for [milestone:0.8.3 0.8.3].

Fix version number in ChangeLog.

Update ChangeLog for [milestone:0.8.3 0.8.3].

Fix action URL of settings page so that it works when Trac is running at the root path of the host. Closes #1282.

Remove stray reference to {{{svn.util}}}. Closes #1500.

TracDiff: reworked the web UI for the generalized diff

The session is not used anymore. Instead, the browser module keeps track
of the selected base for diff, when one selects a directory entry
(subdirectory or file) and when one selects a different revision.

Also in this changeset:
* anydiff.cs: that file has been merged in browser.cs
* Browser.py: In the Revision Log, it is now possible to diff
between revisions corresponding to different paths
(which happens after move and rename operations).

TracDiff: The zip download of a tree (#238) was broken. Fixed.

Another fix for the [1787] fix... I overlooked the fact that some redirect are issued before creating a session object (in login/logout requests). Should fix #1669.

Revert accidential check-in of ticket model classes in [1788].

Fix tests broken by [1787].