tigefa4u projects Trac

Fix two minor glitches related to #454:
- `_comment{n}` pseudo-fields shouldn't appear in the timeline
- ''Last edited'' date and the other dates for previous comment versions were always the date of the comment creation (a.k.a. version 0)

0.12dev: Added ticket comment history and diff viewers.

Part of #454.

0.12dev: Fixed `Href.__call__()` to also accept subclasses of `dict`, `list` and `tuple`.

Closes #8632.

0.12dev: When editing a ticket comment, save the old comment in virtual fields named `_comment{n}` (n=0, 1, ...) in `ticket_change`. This allows showing the time and author of the last edit. The next step is a full comment history viewer.

Also, improved the layout of the comment editor and hidden the ticket property editor when editing a comment, as suggested by Christian Boos.

Part of #454.

0.12dev: Merged [8560] from 0.11-stable.

0.11-stable: Fixed display of check boxes in queries with multiple negative constraints. Patch by Erik Bray, thanks!

Closes #8626.

0.12dev: Merged [8558] from 0.11-stable.

0.11-stable: Use the `[browser] hide_properties` config option to hide properties independently of the renderer that is used, not only in the default renderers.

Closes #8606.

0.12dev: Prevent [8556] from being merged from 0.11-stable.

0.11-stable: Backported [8555] from trunk.