tigefa4u projects Trac

TracCrossReferences: bug fix for Ticket timeline bug introduced in r2788

The refactoring of TracCrossReferences continues...

The rebuilding of the cross-references is now done in the `xref.module`.

Consequently, a `ITracObjectManager` has now less to do:
It only has to provide the db type it manages (only one),
the factory method to create the subclass of `TracObject`
that it manages and an iterator over all existing objects
of that kind.

At the `TracObject` level, a bit more generic functionality
concerning the DB interface has been added:
* a `_load` method that can be used to ensure a `TracObject`
is in it's loaded form. `reload` should still be used if
one wants to ''force'' reading from the DB.

The facets are now better handled at the level of each `TracObject`
(there will be soon a `WikiFacet` class again, I guess).

''View changes'' should trigger a `GET`, not a `POST`. Thanks to mgood for the tip.

Title for generalized diff is a bit more compact: ''Changes from `_old_path_` at r`xy` to `_new_path_` at r`yz`''

Only show the ''View changes'' button if there are more than 10 entries shown. This change concerns both the revision log and the wiki history.

TracDiff cleanup: the ''View changes'' button on TracRevisionLog now directly sends the diff request to the TracChangeset module (no redirection involved anymore)

TracDiff: the title for displaying a set of changes on a given path is now more compact, and links to the corresponding TracLogRevision view

The TracDiff branch is not needed anymore.

TracDiff merged in trunk, as a new feature for Trac [milestone:0.10]

* debian/patches/10_securityfixes.diff (Closes: #348791):
Fix CVE-2005-4065 and CVE-2005-4644 vulnerabilities.