tigefa4u projects Trac

Blame: follow-up to r7676, which was buggy for revisions having a different path than the current one (i.e. for revisions before a copy/move).

0.12dev: Don't die in `trac-admin hotcopy` when copying produces errors. Also, preserve directory permissions.

This closes #7798 and #6106 for trunk.

0.12dev: Modularized `trac-admin` by introducing an interface `IAdminCommandProvider` and moving all commands except `help`, `quit` and `initenv` into their respective owner modules.

* Tab-completion has been reworked and should be closer to what's usual in shells.
* Exceptions raised in tab-completion functions are now displayed, where they were previously swallowed by `readline`.

This completes the first part of #7770.

Don't forget to run:
{{{
python setup.py develop
}}}
to pick up the new modules.

Blame: javascript code refactoring.

Only loop once over the <th> cells.

Make sure the ''Close'' button on the changeset panel in the annotate view works for some versions of Safari and Chrome.

Clicking on any annotation header column hides that column.

Implements #7055.

Thanks to Ted Gifford, who came up with the initial approach (see googlegroups:trac-users:846b21eb4e550e0a).

0.12dev: sync TracInstall with changes done for 0.11 version

0.12dev: prevent merge of [7660,7665,7667]

0.12dev: merged ChangeLog update for 0.11.2, from r7659

r7656 didn't modify the svnmerge-integrated property, redoing it with --record-only